Arco, , USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Family Scientific Name Park Status Park Abundance Park Nativity Aceraceae Acer glabrum var. glabrum Present in Park Uncommon Native Amaranthaceae Amaranthus albus Present in Park Uncommon Native Amaranthaceae Amaranthus californicus Present in Park Uncommon Native Amaranthaceae Amaranthus retroflexus Present in Park Uncommon Non-native Apiaceae Angelica pinnata Present in Park Uncommon Native Apiaceae Cymopterus acaulis var. acaulis Present in Park Uncommon Native Apiaceae Cymopterus glaucus Present in Park Uncommon Native Apiaceae Cymopterus longipes Present in Park Uncommon Native Apiaceae Cymopterus petraeus Present in Park Unknown Native Apiaceae Cymopterus terebinthinus var. foeniculaceus Present in Park Common Native Apiaceae Heracleum lanatum Present in Park Uncommon Native Apiaceae Lomatium dissectum var. eatonii Present in Park Common Native Apiaceae Lomatium dissectum var. multifidum Present in Park Common Native Apiaceae Lomatium foeniculaceum var. macdougalii Present in Park Common Native Apiaceae Lomatium grayi Unconfirmed NA Native Apiaceae Lomatium nudicaule Present in Park Rare Native Apiaceae Lomatium triternatum ssp. platycarpum Present in Park Common Native Apiaceae Lomatium triternatum ssp. triternatum var. triternatum Present in Park Common Native Apiaceae Orogenia linearifolia Present in Park Uncommon Native Apiaceae Osmorhiza chilensis Present in Park Uncommon Native Apiaceae Osmorhiza occidentalis Present in Park Uncommon Native Apiaceae Perideridia gairdneri Present in Park Uncommon Native Apocynaceae Apocynum androsaemifolium Present in Park Uncommon Native Apocynaceae Apocynum cannabinum Present in Park Uncommon Native Apocynaceae Apocynum medium Present in Park Uncommon Native Asclepiadaceae Asclepias fascicularis Present in Park Rare Native Asclepiadaceae Asclepias speciosa Present in Park Uncommon Native Asclepiadaceae Asclepias subverticillata Present in Park Rare Native Achillea millefolium ssp. lanulosa var. lanulosa Present in Park Common Native Asteraceae Acroptilon repens NOXIOUS Unconfirmed NA Non-native Asteraceae Agoseris aurantiaca var. aurantiaca Present in Park Common Native Asteraceae Agoseris glauca var. dasycephala Present in Park Common Native Asteraceae Agoseris glauca var. laciniata Present in Park Common Native Asteraceae Agoseris grandiflora Unconfirmed NA Native Asteraceae Agoseris heterophylla var. heterophylla Present in Park Rare Native Asteraceae Agoseris retrorsa Unconfirmed NA Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 1 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Asteraceae Ambrosia acanthicarpa Present in Park Uncommon Native Asteraceae Anaphalis margaritacea Present in Park Rare Native Asteraceae filagineus Suspected NA Native Asteraceae arcuata Unconfirmed NA Native Asteraceae Antennaria corymbosa Present in Park Uncommon Native Asteraceae Antennaria dimorpha Present in Park Common Native Asteraceae Antennaria microphylla Present in Park Common Native Asteraceae Antennaria rosea Present in Park Common Native Asteraceae Antennaria stenophylla Unconfirmed NA Native Asteraceae Anthemis cotula Present in Park Rare Non-native Asteraceae Arctium minus Present in Park Uncommon Non-native Asteraceae Arnica chamissonis Present in Park Uncommon Native Asteraceae Arnica cordifolia Present in Park Common Native Asteraceae Arnica longifolia Present in Park Uncommon Native Asteraceae Arnica mollis Present in Park Uncommon Native Asteraceae Arnica sororia Present in Park Uncommon Native Asteraceae arbuscula Present in Park Common Native Asteraceae Artemisia cana Unconfirmed NA Native Asteraceae Artemisia dracunculus Present in Park Common Native Asteraceae Artemisia longiloba Present in Park Rare Native Asteraceae Artemisia ludoviciana ssp. ludoviciana var. incompta Present in Park Uncommon Native Asteraceae Artemisia ludoviciana ssp. ludoviciana var. latiloba Present in Park Uncommon Native Asteraceae Artemisia ludoviciana ssp. ludoviciana var. ludoviciana Present in Park Uncommon Native Asteraceae Artemisia nova Unconfirmed NA Native Asteraceae var. tridentata Present in Park Uncommon Native Asteraceae Artemisia tridentata var. vaseyana Present in Park Abundant Native Asteraceae Artemisia tridentata var. wyomingensis Present in Park Common Native Asteraceae Artemisia tripartita Present in Park Common Native Asteraceae Aster campestris Unconfirmed NA Native Asteraceae Aster chilensis ssp. adscendens Present in Park Uncommon Native Asteraceae Aster eatonii Present in Park Uncommon Native Asteraceae Aster perelegans Present in Park Common Native Asteraceae Aster scopulorum Present in Park Uncommon Native Asteraceae Aster spathulatus Unconfirmed NA Native Asteraceae hookeri Unconfirmed NA Native Asteraceae Present in Park Common Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 2 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Asteraceae Brickellia grandiflora Present in Park Rare Native Asteraceae Canadanthus modestus Unconfirmed NA Unknown Asteraceae Carduus nutans NOXIOUS Present in Park Rare Non-native Asteraceae Centaurea diffusa NOXIOUS Present in Park Uncommon Non-native Asteraceae Centaurea maculosa NOXIOUS Present in Park Uncommon Non-native Asteraceae Centaurea solstitialis NOXIOUS Encroaching NA Non-native Asteraceae Chaenactis douglasii Present in Park Common Native Asteraceae Chondrilla juncea NOXIOUS Present in Park Rare Non-native Asteraceae Chrysopsis villosa var. hispida Present in Park Rare Native Asteraceae Chrysothamnus nauseosus var. oreophilus Present in Park Common Native Asteraceae Chrysothamnus nauseosus var. speciosus Present in Park Common Native Asteraceae Chrysothamnus viscidiflorus var. lanceolatus Present in Park Common Native Asteraceae Chrysothamnus viscidiflorus var. puberulus Present in Park Common Native Asteraceae Chrysothamnus viscidiflorus var. viscidiflorus Present in Park Common Native Asteraceae Cichorium intybus Present in Park Rare Non-native Asteraceae Cirsium arvense NOXIOUS Present in Park Uncommon Non-native Asteraceae Cirsium canovirens Present in Park Common Native Asteraceae Cirsium eatonii Unconfirmed NA Unknown Asteraceae Cirsium flodmanii Unconfirmed NA Unknown Asteraceae Cirsium orthe (taxon unknown - invalid taxon name?) Unconfirmed NA Unknown Asteraceae Cirsium subniveum Present in Park Uncommon Native Asteraceae Cirsium undulatum Unconfirmed NA Unknown Asteraceae Cirsium utahense Present in Park Uncommon Native Asteraceae Cirsium vulgare Present in Park Rare Non-native Asteraceae Crepis acuminata Present in Park Common Native Asteraceae Crepis atribarba Present in Park Common Native Asteraceae Crepis modocensis Present in Park Common Native Asteraceae Crepis occidentalis Present in Park Rare Native Asteraceae Erigeron aphanactis var. aphanactis Present in Park Uncommon Native Asteraceae Erigeron bloomeri Present in Park Uncommon Native Asteraceae Erigeron canus Unconfirmed NA Unknown Asteraceae Erigeron chrysopsidis var. austiniae Present in Park Uncommon Native Asteraceae Erigeron compositus var. discoideus Unconfirmed NA Native Asteraceae Erigeron compositus var. glabratus Present in Park Uncommon Native Asteraceae Erigeron corymbosus Present in Park Uncommon Native Asteraceae Erigeron divergens var. divergens Present in Park Uncommon Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 3 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Asteraceae Erigeron glabellus Present in Park Uncommon Native Asteraceae Erigeron lonchophyllus Present in Park Uncommon Native Asteraceae Erigeron nanus Unconfirmed NA Unknown Asteraceae Erigeron pumilus ssp. concinnoides var. concinnus Present in Park Common Native Asteraceae Erigeron pumilus ssp. intermedius var. euintermedius Unconfirmed NA Native Asteraceae Erigeron pumilus ssp. intermedius var. gracilior Present in Park Common Native Asteraceae Erigeron speciosus var. macranthus Present in Park Common Native Asteraceae Eriophyllum lanatum var. integrifolium Present in Park Common Native Asteraceae Eupatorium occidentale Present in Park Rare Native Asteraceae Filago californica Present in Park Uncommon Native Asteraceae Gaillardia aristata Present in Park Rare Non-native Asteraceae Gnaphalium palustre Present in Park Uncommon Native Asteraceae Grindelia squarrosa var. quasiperennis Present in Park Uncommon Native Asteraceae Grindelia squarrosa var. serrulata Present in Park Uncommon Native Asteraceae Grindelia squarrosa var. squarrosa Present in Park Uncommon Non-native Asteraceae Gutierrezia sarothrae Present in Park Uncommon Native Asteraceae Haplopappus acaulis Present in Park Uncommon Native Asteraceae Haplopappus nanus Present in Park Common Native Asteraceae Haplopappus resinosus Unconfirmed NA Unknown Asteraceae Haplopappus stenophyllus Present in Park Uncommon Native Asteraceae Haplopappus suffruticosus Unconfirmed NA Unknown Asteraceae Helianthella uniflora Present in Park Common Native Asteraceae Helianthus annuus Present in Park Uncommon Native Asteraceae Helianthus petiolaris Present in Park Uncommon Native Asteraceae Hieracium cynoglossoides Present in Park Common Native Asteraceae Hieracium gracile Present in Park Uncommon Native Asteraceae Hieracium scouleri var. griseum Present in Park Common Native Asteraceae Iva axillaris Present in Park Uncommon Native Asteraceae Iva xanthifolia Present in Park Rare Native Asteraceae Lactuca serriola Present in Park Common Non-native Asteraceae Layia glandulosa var. glandulosa Present in Park Uncommon Native Asteraceae Lygodesmia spinosa Present in Park Uncommon Native Asteraceae Machaeranthera canescens var. sessiliflora Present in Park Common Native Asteraceae Madia glomerata Present in Park Uncommon Native Asteraceae Madia gracilis Present in Park Uncommon Native Asteraceae Matricaria maritima ssp. inodora Unconfirmed NA Non-native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 4 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Asteraceae Microseris nutans Present in Park Uncommon Native Asteraceae Microseris troximoides Unconfirmed NA Native Asteraceae Onopordum acanthium NOXIOUS Present in Park Rare Non-native Asteraceae Pyrrocoma carthamoides var. cusickii Suspected NA Native Asteraceae Pyrrocoma insecticruris Suspected NA Native Asteraceae Pyrrocoma uniflora var. uniflora Unconfirmed NA Native Asteraceae Rudbeckia occidentalis Present in Park Rare Native Asteraceae Senecio canus Present in Park Common Native Asteraceae Senecio integerrimus var. exaltatus Present in Park Common Native Asteraceae Senecio multilobatus Unconfirmed NA Unknown Asteraceae Senecio serra var. serra Present in Park Common Native Asteraceae Senecio sphaerocephalus Unconfirmed NA Native Asteraceae Senecio streptanthifolius Present in Park Uncommon Native Asteraceae Solidago canadensis var. salebrosa Present in Park Uncommon Native Asteraceae Solidago gigantea Unconfirmed NA Native Asteraceae Sonchus asper Present in Park Rare Non-native Asteraceae Stephanomeria tenuifolia var. myrioclada Present in Park Common Native Asteraceae Stylocline psilocarphoides Present in Park Uncommon Native Asteraceae Tanacetum vulgare Present in Park Rare Non-native Asteraceae Taraxacum officinale Present in Park Uncommon Non-native Asteraceae Tetradymia canescens Present in Park Uncommon Native Asteraceae Townsendia florifera Present in Park Uncommon Native Asteraceae Tragopogon dubius Present in Park Common Non-native Asteraceae Wyethia amplexicaulis Present in Park Rare Native Asteraceae Xanthium strumarium var. canadense Unconfirmed NA Native Betulaceae Alnus incana ssp. rugosa var. occidentalis Present in Park Common Native Betulaceae Betula occidentalis Present in Park Rare Non-native Boraginaceae Amsinckia menziesii Present in Park Uncommon Native Boraginaceae Amsinckia retrorsa Present in Park Uncommon Native Boraginaceae Amsinckia tessellata Present in Park Common Native Boraginaceae Asperugo procumbens Present in Park Uncommon Non-native Boraginaceae Cryptantha affinis Present in Park Uncommon Native Boraginaceae Cryptantha ambigua Unconfirmed NA Native Boraginaceae Cryptantha celosioides Present in Park Uncommon Native Boraginaceae Cryptantha circumscissa Present in Park Common Native Boraginaceae Cryptantha fendleri Present in Park Uncommon Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 5 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Boraginaceae Cryptantha gracilis Present in Park Uncommon Native Boraginaceae Cryptantha humilis Present in Park Uncommon Native Boraginaceae Cryptantha interrupta Present in Park Uncommon Native Boraginaceae Cryptantha rostellata Present in Park Uncommon Native Boraginaceae Cryptantha spiculifera Present in Park Common Native Boraginaceae Cryptantha torreyana Present in Park Common Native Boraginaceae Cryptantha watsonii Unconfirmed NA Unknown Boraginaceae Hackelia floribunda Present in Park Common Native Boraginaceae Hackelia micrantha Present in Park Common Native Boraginaceae Hackelia patens Present in Park Common Native Boraginaceae Lappula occidentalis var. occidentalis Present in Park Common Unknown Boraginaceae Lappula squarrosa Unconfirmed NA Non-native Boraginaceae Lithospermum arvense Present in Park Rare Non-native Boraginaceae Lithospermum ruderale Present in Park Uncommon Native Boraginaceae Mertensia campanulata Unconfirmed NA Unknown Boraginaceae Mertensia ciliata Present in Park Uncommon Native Boraginaceae Mertensia longiflora Present in Park Uncommon Native Boraginaceae Mertensia oblongifolia Present in Park Common Native Boraginaceae Pectocarya penicillata Present in Park Uncommon Native Boraginaceae Pectocarya setosa Unconfirmed NA Native Boraginaceae Plagiobothrys scouleri var. penicillatus Present in Park Common Native Brassicaceae Alyssum desertorum Present in Park Common Non-native Brassicaceae Arabis cobrensis Present in Park Uncommon Native Brassicaceae Arabis divaricarpa Present in Park Uncommon Native Brassicaceae Arabis glabra Present in Park Uncommon Native Brassicaceae Arabis holboellii var. pendulocarpa Present in Park Uncommon Native Brassicaceae Arabis holboellii var. pinetorum Present in Park Uncommon Native Brassicaceae Arabis holboellii var. retrofracta Present in Park Uncommon Native Brassicaceae Arabis holboellii var. secunda Present in Park Uncommon Native Brassicaceae Arabis lemmonii var. lemmonii Present in Park Uncommon Native Brassicaceae Arabis lignifera Present in Park Uncommon Native Brassicaceae Arabis microphylla Present in Park Uncommon Native Brassicaceae Arabis perennans Present in Park Uncommon Native Brassicaceae Arabis sparsiflora var. sparsiflora Present in Park Uncommon Native Brassicaceae Arabis sparsiflora var. subvillosa Present in Park Uncommon Native Brassicaceae Arabis suffrutescens Present in Park Uncommon Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 6 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Brassicaceae Barbarea orthoceras Present in Park Rare Native Brassicaceae Berteroa incana Encroaching NA Non-native Brassicaceae Camelina microcarpa Present in Park Uncommon Non-native Brassicaceae Capsella bursa-pastoris Present in Park Uncommon Non-native Brassicaceae Cardaria draba NOXIOUS Encroaching NA Non-native Brassicaceae Chorispora tenella Present in Park Uncommon Non-native Brassicaceae Descurainia californica Present in Park Uncommon Native Brassicaceae Descurainia pinnata var. filipes Present in Park Uncommon Native Brassicaceae Descurainia pinnata var. nelsonii Present in Park Uncommon Native Brassicaceae Descurainia richardsonii var. sonnei Present in Park Uncommon Native Brassicaceae Descurainia richardsonii var. viscosa Present in Park Uncommon Native Brassicaceae Descurainia sophia Present in Park Uncommon Non-native Brassicaceae Draba densifolia Present in Park Uncommon Native Brassicaceae Draba douglasii Present in Park Uncommon Native Brassicaceae Draba paysonii var. treleasii Present in Park Uncommon Native Brassicaceae Draba verna Present in Park Common Non-native Brassicaceae Erysimum asperum Present in Park Uncommon Native Brassicaceae Erysimum cheiranthoides Present in Park Rare Non-native Brassicaceae Erysimum occidentale Present in Park Uncommon Native Brassicaceae Isatis tinctoria NOXIOUS Encroaching NA Non-native Brassicaceae Lepidium densiflorum Present in Park Uncommon Native Brassicaceae Lepidium lasiocarpum Present in Park Uncommon Native Brassicaceae Lepidium perfoliatum Present in Park Common Non-native Brassicaceae Lepidium virginicum Present in Park Uncommon Native Brassicaceae Lesquerella occidentalis var. diversifolia Present in Park Rare Native Brassicaceae Lesquerella occidentalis var. occidentalis Present in Park Uncommon Native Brassicaceae Malcolmia africana Encroaching NA Non-native Brassicaceae Nasturtium officinale Present in Park Uncommon Native Brassicaceae Phoenicaulis cheiranthoides Present in Park Rare Native Brassicaceae Polyctenium fremontii var. fremontii Present in Park Uncommon Native Brassicaceae Rorippa curvipes var. curvipes Present in Park Uncommon Native Brassicaceae Schoenocrambe linifolia Present in Park Rare Native Brassicaceae Sisymbrium altissimum Present in Park Common Non-native Brassicaceae Sisymbrium loeselii Present in Park Rare Non-native Brassicaceae Thlaspi arvense Present in Park Common Non-native Cactaceae Coryphantha sp. Unconfirmed NA Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 7 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Cactaceae Opuntia erinacea Unconfirmed NA Native Cactaceae Opuntia polyacantha var. polyacantha Present in Park Uncommon Native Cactaceae Pediocactus simpsonii Unconfirmed NA Native Campanulaceae Campanula rotundifolia Present in Park Rare Non-native Campanulaceae Downingia bacigalupii Present in Park Rare Native Campanulaceae Porterella carnosula Present in Park Rare Native Cannabaceae Cannabis sativa CONTROLLED SUBSTANCE Suspected NA Non-native Caprifoliaceae Sambucus cerulea Present in Park Rare Native Caprifoliaceae Symphoricarpos oreophilus var. utahensis Present in Park Common Native Caryophyllaceae Arenaria aculeata Present in Park Uncommon Native Caryophyllaceae Arenaria congesta var. congesta Present in Park Uncommon Native Caryophyllaceae Arenaria fendleri var. aculeata Present in Park Uncommon Native Caryophyllaceae Arenaria franklinii var. franklinii Present in Park Uncommon Native Caryophyllaceae Arenaria kingii var. glabrescens Present in Park Uncommon Native Caryophyllaceae Arenaria nuttallii Unconfirmed NA Unknown Caryophyllaceae Cerastium glomeratum Unconfirmed NA Non-native Caryophyllaceae Cerastium nutans Present in Park Uncommon Native Caryophyllaceae Lychnis alba Present in Park Rare Non-native Caryophyllaceae Silene douglasii Present in Park Uncommon Native Caryophyllaceae Silene menziesii Present in Park Uncommon Native Caryophyllaceae Stellaria longipes Present in Park Rare Native Chenopodiaceae Atriplex canescens var. canescens Unconfirmed NA Native Chenopodiaceae Atriplex confertifolia Unconfirmed NA Native Chenopodiaceae Chenopodium album Present in Park Uncommon Non-native Chenopodiaceae Chenopodium botrys Unconfirmed NA Non-native Chenopodiaceae Chenopodium chenopodioides Present in Park Uncommon Native Chenopodiaceae Chenopodium fremontii var. fremontii Present in Park Uncommon Native Chenopodiaceae Chenopodium humile Present in Park Rare Non-native Chenopodiaceae Chenopodium leptophyllum var. leptophyllum Present in Park Common Native Chenopodiaceae Chenopodium leptophyllum var. subglabrum Present in Park Common Native Chenopodiaceae Chenopodium murale Unconfirmed NA Non-native Chenopodiaceae Eurotia lanata Unconfirmed NA Native Chenopodiaceae Grayia spinosa Present in Park Rare Native Chenopodiaceae Halogeton glomeratus Unconfirmed NA Non-native Chenopodiaceae Kochia prostrata Present in Park Uncommon Non-native Chenopodiaceae Kochia scoparia Present in Park Common Non-native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 8 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Chenopodiaceae Monolepis nuttalliana Present in Park Rare Native Chenopodiaceae Salsola pestifer Present in Park Uncommon Non-native Clusiaceae Hypericum perforatum Unconfirmed NA Non-native Clusiaceae Hypericum scouleri Present in Park Rare Native Convolvulaceae Convolvulus arvensis NOXIOUS Present in Park Rare Non-native Cornaceae Cornus sericea var. sericea Present in Park Rare Native Crassulaceae Sedum lanceolatum Present in Park Uncommon Native Cupressaceae Unconfirmed NA Unknown Cupressaceae Juniperus osteosperma Present in Park Uncommon Native Cupressaceae Juniperus scopulorum Present in Park Common Native Cuscutaceae Cuscuta sp. Present in Park Rare Unknown Cyperaceae Carex aquatilis Present in Park Uncommon Native Cyperaceae Carex aurea Present in Park Rare Native Cyperaceae Carex douglasii Present in Park Common Native Cyperaceae Carex filifolia Present in Park Uncommon Native Cyperaceae Carex hoodii Present in Park Uncommon Native Cyperaceae Carex lanuginosa Present in Park Uncommon Native Cyperaceae Carex microptera Present in Park Uncommon Native Cyperaceae Carex nebrascensis Unconfirmed NA Native Cyperaceae Carex pachystachya Present in Park Uncommon Native Cyperaceae Carex petasata Present in Park Uncommon Native Cyperaceae Carex praegracilis Present in Park Uncommon Native Cyperaceae Carex praticola Present in Park Uncommon Native Cyperaceae Carex siccata Unconfirmed NA Native Cyperaceae Carex simulata Unconfirmed NA Native Cyperaceae Carex vallicola Present in Park Uncommon Native Cyperaceae Eleocharis palustris Present in Park Uncommon Native Cyperaceae Eleocharis rostellata Unconfirmed NA Native Cyperaceae Scirpus acutus Present in Park Rare Native Cyperaceae Scirpus americanus Present in Park Rare Native Cyperaceae Scirpus validus Unconfirmed NA Native Dryopteridaceae Cystopteris fragilis Present in Park Uncommon Native Dryopteridaceae Dryopteris filix-mas Present in Park Uncommon Native Dryopteridaceae Polystichum scopulinum Present in Park Rare Native Dryopteridaceae Woodsia oregana Unconfirmed NA Native Dryopteridaceae Woodsia scopulina Present in Park Rare Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 9 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Elaeagnaceae Elaeagnus angustifolia Present in Park Rare Non-native Equisetaceae Equisetum hyemale ssp. affine Present in Park Rare Native Equisetaceae Equisetum laevigatum Present in Park Rare Native Equisetaceae Equisetum variegatum Present in Park Rare Native Euphorbiaceae Chamaesyce glyptosperma Present in Park Rare Native Euphorbiaceae Chamaesyce ocellata var. arenicola Present in Park Rare Native Euphorbiaceae Euphorbia albomarginata Present in Park Rare Native Euphorbiaceae Euphorbia esula NOXIOUS Present in Park Rare Non-native Fabaceae Astragalus agrestis Present in Park Uncommon Native Fabaceae Astragalus atratus var. inseptus Unconfirmed NA Native Fabaceae Astragalus calycosus var. calycosus Present in Park Rare Native Fabaceae Astragalus canadensis var. brevidens Present in Park Uncommon Native Fabaceae Astragalus cibarius Present in Park Common Native Fabaceae Astragalus convallarius var. convallarius Present in Park Uncommon Native Fabaceae Astragalus curvicarpus Present in Park Rare Native Fabaceae Astragalus filipes Present in Park Common Native Fabaceae Astragalus geyeri var. geyeri Unconfirmed NA Native Fabaceae Astragalus iodanthus Present in Park Uncommon Native Fabaceae Astragalus lentiginosus var. lentiginosus Present in Park Common Native Fabaceae Astragalus lentiginosus var. salinus Present in Park Common Native Fabaceae Astragalus malacus Present in Park Rare Native Fabaceae Astragalus miser var. tenuifolius Present in Park Rare Native Fabaceae Astragalus obscurus Present in Park Rare Native Fabaceae Astragalus oniciformis Present in Park Uncommon Native Fabaceae Astragalus purshii var. glareosus Present in Park Common Native Fabaceae Astragalus purshii var. purshii Present in Park Uncommon Native Fabaceae Astragalus scopulorum Unconfirmed NA Unknown Fabaceae Astragalus terminalis Present in Park Rare Native Fabaceae Astragalus whitneyi var. confusus Present in Park Rare Native Fabaceae Caragana arborescens Present in Park Rare Non-native Fabaceae Glycyrrhiza lepidota Present in Park Rare Native Fabaceae Lotus tenuis Present in Park Rare Non-native Fabaceae Lupinus arbustus Present in Park Common Native Fabaceae Lupinus argenteus var. argenteus Present in Park Common Native Fabaceae Lupinus argenteus var. heteranthus Present in Park Common Native Fabaceae Lupinus argenteus var. holosericeus Present in Park Common Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 10 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Fabaceae Lupinus argenteus var. parviflorus Present in Park Uncommon Native Fabaceae Lupinus argenteus var. utahensis Present in Park Uncommon Native Fabaceae Lupinus caudatus Present in Park Uncommon Native Fabaceae Lupinus lepidus var. sellulus Unconfirmed NA Native Fabaceae Lupinus leucophyllus Present in Park Common Native Fabaceae Lupinus polyphyllus var. burkei Present in Park Uncommon Native Fabaceae Lupinus polyphyllus var. humicola Present in Park Uncommon Native Fabaceae Lupinus polyphyllus var. prunophilus Present in Park Uncommon Native Fabaceae Lupinus sericeus Present in Park Common Native Fabaceae Medicago falcata Present in Park Rare Non-native Fabaceae Medicago lupulina Present in Park Rare Non-native Fabaceae Medicago sativa Present in Park Uncommon Non-native Fabaceae Melilotus alba Present in Park Rare Non-native Fabaceae Melilotus officinalis Present in Park Uncommon Non-native Fabaceae Onobrychis viciifolia Present in Park Uncommon Non-native Fabaceae Oxytropis lagopus var. lagopus Present in Park Rare Native Fabaceae Psoralidium lanceolatum Present in Park Uncommon Native Fabaceae Trifolium cyathiferum Present in Park Rare Native Fabaceae Trifolium gymnocarpon Unconfirmed NA Native Fabaceae Trifolium hybridum Present in Park Uncommon Non-native Fabaceae Trifolium pratense Unconfirmed NA Non-native Fabaceae Trifolium repens Present in Park Uncommon Non-native Fabaceae Trifolium variegatum Present in Park Rare Native Fabaceae Trifolium wormskioldii var. wormskioldii Present in Park Rare Native Fumariaceae Dicentra uniflora Present in Park Rare Native Gentianaceae Gentiana affinis Present in Park Rare Native Geraniaceae Erodium cicutarium Present in Park Uncommon Non-native Geraniaceae Geranium viscosissimum var. incisum Present in Park Common Native Grossulariaceae Ribes aureum Present in Park Uncommon Native Grossulariaceae Ribes cereum var. inebrians Present in Park Common Native Grossulariaceae Ribes hudsonianum var. petiolare Present in Park Rare Native Grossulariaceae Ribes viscosissimum Unconfirmed NA Native Hydrangeaceae Philadelphus lewisii Present in Park Common Native Hydrophyllaceae Hesperochiron pumilus Present in Park Uncommon Native Hydrophyllaceae Hydrophyllum capitatum var. capitatum Present in Park Common Native Hydrophyllaceae Nama densum Present in Park Rare Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 11 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Hydrophyllaceae Nemophila breviflora Present in Park Uncommon Native Hydrophyllaceae Phacelia glandulifera Present in Park Uncommon Native Hydrophyllaceae Phacelia hastata var. alpina Present in Park Common Native Hydrophyllaceae Phacelia hastata var. hastata Present in Park Common Native Hydrophyllaceae Phacelia heterophylla var. heterophylla Present in Park Common Native Hydrophyllaceae Phacelia incana Unconfirmed NA Native Hydrophyllaceae Phacelia inconspicua Present in Park Rare Native Hydrophyllaceae Phacelia linearis Unconfirmed NA Native Iridaceae Iris missouriensis Present in Park Rare Native Iridaceae Sisyrinchium demissum Present in Park Rare Native Iridaceae Sisyrinchium idahoense Present in Park Rare Native Juncaceae Juncus arcticus Present in Park Uncommon Native Juncaceae Juncus balticus Unconfirmed NA Native Juncaceae Juncus bufonius Present in Park Uncommon Native Juncaceae Juncus ensifolius Present in Park Uncommon Native Juncaceae Juncus tenuis Present in Park Uncommon Native Juncaceae Juncus triglumis Present in Park Uncommon Native Juncaginaceae Triglochin maritimum Present in Park Rare Native Lamiaceae Agastache urticifolia Present in Park Common Native Lamiaceae Marrubium vulgare Present in Park Rare Non-native Lamiaceae Mentha arvensis var. glabrata Present in Park Rare Native Lamiaceae Monardella odoratissima Unconfirmed NA Native Lamiaceae Salvia aethiopis WEED SPECIES OF CONCERN Encroaching NA Non-native Lamiaceae Scutellaria antirrhinoides Present in Park Uncommon Native Lemnaceae Lemna minor Present in Park Rare Native Lemnaceae Lemna minuta Present in Park Rare Native Liliaceae Allium aaseae Unconfirmed NA Unknown Liliaceae Allium acuminatum Present in Park Common Native Liliaceae Allium anceps Unconfirmed NA Native Liliaceae Allium brandegeei Present in Park Uncommon Native Liliaceae Allium cernuum Unconfirmed NA Native Liliaceae Allium geyeri var. geyeri Present in Park Uncommon Native Liliaceae Allium nevadense var. nevadense Present in Park Uncommon Native Liliaceae Allium parvum Unconfirmed NA Native Liliaceae Allium simillimum Unconfirmed NA Native Liliaceae Allium textile Present in Park Uncommon Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 12 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Liliaceae Allium tolmiei var. tolmiei Unconfirmed NA Native Liliaceae Calochortus bruneaunis Present in Park Common Native Liliaceae Calochortus eurycarpus Present in Park Common Native Liliaceae Calochortus macrocarpus Present in Park Uncommon Native Liliaceae Calochortus nitidus Unconfirmed NA Unknown Liliaceae Calochortus nuttallii Present in Park Uncommon Native Liliaceae Camassia quamash Unconfirmed NA Native Liliaceae Fritillaria atropurpurea Present in Park Common Native Liliaceae Fritillaria pudica Present in Park Common Native Liliaceae Smilacina racemosa Present in Park Uncommon Native Liliaceae Smilacina stellata Present in Park Uncommon Native Liliaceae Veratrum californicum Present in Park Uncommon Native Liliaceae Zigadenus elegans Present in Park Common Native Liliaceae Zigadenus paniculatus Present in Park Common Native Liliaceae Zigadenus venenosus Present in Park Common Native Linaceae Linum perenne Present in Park Uncommon Non-native Loasaceae Mentzelia albicaulis Present in Park Common Native Loasaceae Mentzelia dispersa Present in Park Uncommon Native Loasaceae Mentzelia laevicaulis Present in Park Uncommon Native Malvaceae Iliamna rivularis Present in Park Rare Native Malvaceae Malva neglecta Present in Park Uncommon Non-native Malvaceae Sidalcea oregana var. oregana Present in Park Uncommon Native Malvaceae Sphaeralcea munroana Present in Park Common Native Oleaceae Fraxinus sp. Present in Park Rare Non-native Onagraceae Camissonia andina Present in Park Common Native Onagraceae Camissonia breviflora Present in Park Rare Native Onagraceae Camissonia minor Present in Park Uncommon Native Onagraceae Camissonia parvula Present in Park Rare Native Onagraceae Camissonia subacaulis Unconfirmed NA Native Onagraceae Camissonia tanacetifolia Present in Park Uncommon Native Onagraceae Circaea alpina Present in Park Rare Native Onagraceae Clarkia rhomboidea Present in Park Rare Native Onagraceae Epilobium alpinum Unconfirmed NA Native Onagraceae Epilobium angustifolium Present in Park Rare Native Onagraceae Epilobium brachycarpum Present in Park Uncommon Native Onagraceae Epilobium ciliatum var. ciliatum Present in Park Uncommon Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 13 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Onagraceae Epilobium ciliatum var. glandulosum Present in Park Uncommon Native Onagraceae Epilobium densiflorum Present in Park Rare Native Onagraceae Epilobium halleanum Present in Park Uncommon Native Onagraceae Epilobium pygmaeum Present in Park Rare Native Onagraceae Gayophytum decipiens Present in Park Uncommon Native Onagraceae Gayophytum diffusum var. strictipes Present in Park Common Native Onagraceae Gayophytum humile Present in Park Uncommon Native Onagraceae Gayophytum racemosum Present in Park Uncommon Native Onagraceae Gayophytum ramosissimum Present in Park Common Native Onagraceae Oenothera caespitosa var. caespitosa Present in Park Uncommon Native Onagraceae Oenothera caespitosa var. marginata Present in Park Common Native Onagraceae Oenothera elata Present in Park Rare Native Onagraceae Oenothera pallida ssp. pallida var. pallida Present in Park Uncommon Native Orchidaceae Corallorrhiza maculata Present in Park Rare Native Orchidaceae Corallorrhiza striata Present in Park Rare Native Orchidaceae Habenaria dilatata var. dilatata Present in Park Rare Native Orchidaceae Habenaria hyperborea Present in Park Rare Native Orobanche corymbosa Present in Park Rare Native Orobanchaceae Orobanche fasciculata Present in Park Rare Native Orobanchaceae Orobanche fasciculata form lutea Present in Park Rare Native Pinaceae Pinus contorta var. latifolia Present in Park Rare Unknown Pinaceae Pinus flexilis Present in Park Common Native Pinaceae Pseudotsuga menziesii var. glauca Present in Park Uncommon Native Plantaginaceae Plantago patagonica Present in Park Uncommon Native Poaceae Agropyron cristatum sensu amplo Present in Park Common Non-native Poaceae Agrostis exarata Present in Park Uncommon Native Poaceae Agrostis scabra Present in Park Uncommon Native Poaceae Alopecurus aequalis Present in Park Rare Native Poaceae Aristida purpurea Present in Park Rare Native Poaceae Avena fatua Unconfirmed NA Non-native Poaceae Avena sativa Unconfirmed NA Non-native Poaceae Bromus inermis Present in Park Uncommon Non-native Poaceae Bromus japonicus Unconfirmed NA Non-native Poaceae Bromus marginatus Present in Park Common Native Poaceae Bromus riparius Present in Park Rare Non-native Poaceae Bromus secalinus Present in Park Rare Non-native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 14 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Poaceae Bromus squarrosus Present in Park Common Non-native Poaceae Bromus tectorum Present in Park Abundant Non-native Poaceae Calamagrostis rubescens Present in Park Uncommon Native Poaceae Catabrosa aquatica Present in Park Rare Native Poaceae Cinna latifolia Present in Park Rare Native Poaceae Dactylis glomerata Present in Park Rare Non-native Poaceae Danthonia unispicata Present in Park Rare Native Poaceae Deschampsia danthonioides Present in Park Rare Native Poaceae Deschampsia elongata Present in Park Rare Native Poaceae X Elyhordeum macounii Unconfirmed NA Native Poaceae X Elyleymus aristatus Unconfirmed NA Native Poaceae Elymus brevifolius Present in Park Rare Native Poaceae Elymus cinereus Present in Park Common Native Poaceae Elymus elongatus ssp. ponticus Unconfirmed NA Non-native Poaceae Elymus elymoides Present in Park Common Native Poaceae Elymus flavescens Present in Park Rare Native Poaceae Elymus glaucus Present in Park Uncommon Native Poaceae Elymus X hansenii Unconfirmed NA Native Poaceae Elymus hispidus Present in Park Rare Non-native Poaceae Elymus junceus Unconfirmed NA Non-native Poaceae Elymus lanceolatus Present in Park Common Native Poaceae Elymus repens Present in Park Uncommon Non-native Poaceae Elymus X saundersii Unconfirmed NA Native Poaceae Elymus X saxicolus Unconfirmed NA Native Poaceae Elymus smithii Present in Park Uncommon Native Poaceae Elymus spicatus Present in Park Common Native Poaceae Elymus subsecundus Present in Park Common Native Poaceae Elymus trachycaulus ssp. trachycaulus Present in Park Uncommon Native Poaceae Elymus wawawaiensis Present in Park Rare Non-native Poaceae Eremopyrum triticeum Unconfirmed NA Non-native Poaceae Festuca brachyphylla Unconfirmed NA Non-native Poaceae Festuca bromoides Unconfirmed NA Non-native Poaceae Festuca idahoensis Present in Park Common Native Poaceae Festuca octoflora Present in Park Rare Native Poaceae Festuca ovina sensu stricto Unconfirmed NA Non-native Poaceae Festuca pacifica Present in Park Common Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 15 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Poaceae Festuca scabrella sensu stricto Unconfirmed NA Non-native Poaceae Festuca trachyphylla sensu stricto Present in Park Rare Non-native Poaceae Glyceria striata Present in Park Uncommon Native Poaceae Hordeum brachyantherum Present in Park Uncommon Native Poaceae Hordeum jubatum Present in Park Uncommon Native Poaceae Hordeum vulgare Unconfirmed NA Non-native Poaceae Koeleria macrantha Present in Park Common Native Poaceae Leucopoa kingii Present in Park Rare Native Poaceae Melica bulbosa Present in Park Common Native Poaceae Melica fugax Unconfirmed NA Unknown Poaceae Muhlenbergia richardsonis Present in Park Uncommon Native Poaceae Phalaris arundinacea Present in Park Rare Native Poaceae Phleum pratense Present in Park Rare Non-native Poaceae Poa ampla Present in Park Uncommon Native Poaceae Poa bulbosa Present in Park Uncommon Non-native Poaceae Poa canbyi Present in Park Rare Native Poaceae Poa cusickii Unconfirmed NA Native Poaceae Poa fendleriana sensu amplo Present in Park Rare Native Poaceae Poa gracillima Unconfirmed NA Unknown Poaceae Poa juncifolia Present in Park Uncommon Native Poaceae Poa nevadensis Present in Park Uncommon Native Poaceae Poa palustris Present in Park Uncommon Non-native Poaceae Poa pratensis sensu amplo Present in Park Common Non-native Poaceae Poa scabrella Present in Park Rare Native Poaceae Poa secunda sensu stricto (=Poa sandbergii) Present in Park Abundant Native Poaceae Poa wheeleri Present in Park Uncommon Native Poaceae Polypogon monspeliensis Present in Park Uncommon Non-native Poaceae Secale cereale Unconfirmed NA Non-native Poaceae Sphenopholis obtusata Present in Park Rare Native Poaceae Sporobolus cryptandrus Present in Park Uncommon Native Poaceae Stipa X bloomeri Present in Park Uncommon Native Poaceae Stipa comata var. comata Present in Park Common Native Poaceae Stipa comata var. intermedia Present in Park Unknown Native Poaceae Stipa hymenoides Present in Park Common Native Poaceae Stipa lemmonii Unconfirmed NA Unknown Poaceae Stipa nelsonii ssp. dorei Present in Park Rare Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 16 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Poaceae Stipa nelsonii ssp. nelsonii var. longiaristata Present in Park Common Native Poaceae Stipa nelsonii ssp. nelsonii var. nelsonii Present in Park Uncommon Native Poaceae Stipa nevadensis Unconfirmed NA Unknown Poaceae Stipa occidentalis var. californica Present in Park Rare Native Poaceae Stipa occidentalis var. pubescens Present in Park Common Native Poaceae Stipa pinetorum Present in Park Rare Native Poaceae Stipa richardsonii Unconfirmed NA Unknown Poaceae Stipa thurberiana Present in Park Uncommon Native Poaceae Stipa webberi Present in Park Rare Native Poaceae Torreyochloa pallida Present in Park Uncommon Native Poaceae Triticum aestivum Present in Park Rare Non-native Polemoniaceae Collomia linearis Present in Park Common Native Polemoniaceae Collomia tenella Present in Park Common Native Polemoniaceae Collomia tinctoria Present in Park Common Native Polemoniaceae Eriastrum sparsiflorum var. wilcoxii Present in Park Common Native Polemoniaceae Gilia aggregata var. aggregata Present in Park Common Native Polemoniaceae Gilia congesta var. congesta Present in Park Uncommon Native Polemoniaceae Gilia inconspicua var. inconspicua Present in Park Common Native Polemoniaceae Gilia inconspicua var. sinuata Present in Park Uncommon Native Polemoniaceae Gilia inconspicua var. tweedyi Present in Park Uncommon Native Polemoniaceae Gilia leptomeria var. leptomeria Present in Park Uncommon Native Polemoniaceae Gilia leptomeria var. micromeria Present in Park Common Native Polemoniaceae Gilia tenerrima Present in Park Uncommon Native Polemoniaceae Gymnosteris nudicaulis Present in Park Common Native Polemoniaceae Gymnosteris parvula Present in Park Rare Native Polemoniaceae Langloisia setosissima Present in Park Rare Native Polemoniaceae Leptodactylon pungens var. pungens Present in Park Common Native Polemoniaceae Leptodactylon watsonii Present in Park Uncommon Native Polemoniaceae Linanthus harknessii Present in Park Uncommon Native Polemoniaceae Linanthus septentrionalis Present in Park Uncommon Native Polemoniaceae Microsteris gracilis var. humilior Present in Park Common Native Polemoniaceae Navarretia breweri Present in Park Common Native Polemoniaceae Navarretia intertexta Present in Park Common Native Polemoniaceae Navarretia minima Unconfirmed NA Native Polemoniaceae Phlox aculeata Present in Park Common Native Polemoniaceae Phlox hoodii var. canescens Present in Park Common Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 17 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Polemoniaceae Phlox longifolia Present in Park Common Native Polygonaceae Chorizanthe brevicornu Present in Park Rare Native Polygonaceae Chorizanthe watsonii Present in Park Common Native Polygonaceae Eriogonum baileyi var. baileyi Present in Park Uncommon Native Polygonaceae Eriogonum caespitosum Present in Park Uncommon Native Polygonaceae Eriogonum capistratum var. capistratum Unconfirmed NA Native Polygonaceae Eriogonum capistratum var. grimesii Present in Park Rare Native Polygonaceae Eriogonum cernuum Present in Park Common Native Polygonaceae Eriogonum chrysops Present in Park Unknown Native Polygonaceae Eriogonum compositum Unconfirmed NA Unknown Polygonaceae Eriogonum douglasii var. douglasii Unconfirmed NA Native Polygonaceae Eriogonum effusum Unconfirmed NA Unknown Polygonaceae Eriogonum elatum Present in Park Rare Native Polygonaceae Eriogonum flavum Unconfirmed NA Native Polygonaceae Eriogonum heracleoides var. heracleoides Present in Park Common Native Polygonaceae Eriogonum heracleoides var. minus Present in Park Common Native Polygonaceae Eriogonum mancum Unconfirmed NA Native Polygonaceae Eriogonum microthecum var. foliosum Present in Park Uncommon Native Polygonaceae Eriogonum microthecum var. laxiflorum Present in Park Common Native Polygonaceae Eriogonum nidularium Present in Park Rare Native Polygonaceae Eriogonum ovalifolium var. depressum Present in Park Common Native Polygonaceae Eriogonum ovalifolium var. orthocaulon Present in Park Common Native Polygonaceae Eriogonum ovalifolium var. ovalifolium Present in Park Common Native Polygonaceae Eriogonum ovalifolium var. purpureum Present in Park Uncommon Native Polygonaceae Eriogonum sphaerocephalum var. sphaerocephalum Present in Park Uncommon Native Polygonaceae Eriogonum thymoides Present in Park Rare Native Polygonaceae Eriogonum umbellatum var. deserticum Present in Park Rare Native Polygonaceae Eriogonum umbellatum var. dichrocephalum Present in Park Common Native Polygonaceae Eriogonum umbellatum var. majus Present in Park Common Native Polygonaceae Eriogonum umbellatum var. subalpinum Present in Park Common Native Polygonaceae Eriogonum umbellatum var. umbellatum Present in Park Common Native Polygonaceae Eriogonum verrucosum Present in Park Uncommon Native Polygonaceae Eriogonum vimineum var. vimineum Present in Park Common Native Polygonaceae Oxytheca dendroidea Present in Park Rare Native Polygonaceae Polygonum amphibium Present in Park Rare Native Polygonaceae Polygonum aviculare Present in Park Uncommon Non-native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 18 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Polygonaceae Polygonum douglasii var. douglasii Present in Park Common Native Polygonaceae Polygonum douglasii var. johnstonii Unconfirmed NA Native Polygonaceae Polygonum kelloggii Present in Park Uncommon Native Polygonaceae Polygonum lapathifolium Present in Park Rare Native Polygonaceae Rumex crispus Present in Park Uncommon Non-native Polygonaceae Rumex paucifolius Present in Park Rare Native Polygonaceae Rumex salicifolius ssp. triangulivalvis var. montigenitus Present in Park Rare Native Polygonaceae Rumex salicifolius ssp. triangulivalvis var. triangulivalvis Present in Park Rare Native Portulacaceae Calyptridium roseum Present in Park Rare Native Portulacaceae Lewisia rediviva Present in Park Uncommon Native Portulacaceae Montia chamissoi Present in Park Rare Native Portulacaceae Montia dichotoma Present in Park Rare Native Portulacaceae Montia perfoliata Present in Park Rare Native Portulacaceae Portulaca oleracea Present in Park Rare Non-native Primulaceae Primula cusickiana var cusickiana sensu amplo Present in Park Rare Native Ranunculaceae Actaea rubra Present in Park Uncommon Native Ranunculaceae Aquilegia formosa Present in Park Uncommon Native Ranunculaceae Clematis ligusticifolia Present in Park Rare Native Ranunculaceae Delphinium andersonii var. andersonii Present in Park Common Native Ranunculaceae Delphinium andersonii var. scaposum Present in Park Uncommon Native Ranunculaceae Delphinium nuttallianum var. nuttallianum Present in Park Common Native Ranunculaceae Delphinium occidentale Present in Park Uncommon Native Ranunculaceae Myosurus aristatus Present in Park Rare Native Ranunculaceae Ranunculus andersonii Present in Park Rare Native Ranunculaceae Ranunculus aquatilis Present in Park Rare Native Ranunculaceae Ranunculus cymbalaria Present in Park Rare Native Ranunculaceae Ranunculus glaberrimus Present in Park Common Native Ranunculaceae Ranunculus macounii var. macounii Present in Park Rare Native Ranunculaceae Ranunculus sceleratus var. multifidus Present in Park Rare Native Ranunculaceae Ranunculus testiculatus Present in Park Common Non-native Ranunculaceae Ranunculus uncinatus var. uncinatus Present in Park Rare Native Ranunculaceae Thalictrum fendleri Present in Park Rare Native Ranunculaceae Thalictrum occidentale Present in Park Uncommon Native Rhamnaceae Ceanothus velutinus Present in Park Uncommon Native Rosaceae Amelanchier alnifolia Present in Park Uncommon Native Rosaceae Amelanchier utahensis var. utahensis Present in Park Uncommon Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 19 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Rosaceae Cercocarpus ledifolius Unconfirmed NA Native Rosaceae Chamaebatiaria millefolium Present in Park Common Native Rosaceae Geum macrophyllum var. perincisum Present in Park Uncommon Native Rosaceae Geum triflorum Present in Park Uncommon Native Rosaceae Holodiscus discolor Unconfirmed NA Unknown Rosaceae Holodiscus dumosus var. dumosus Present in Park Common Native Rosaceae Holodiscus dumosus var. glabrescens Present in Park Uncommon Native Rosaceae Petrophyton caespitosum Unconfirmed NA Native Rosaceae Potentilla arguta var. convallaria Present in Park Unknown Native Rosaceae Potentilla biennis Present in Park Uncommon Native Rosaceae Potentilla diversifolia var. diversifolia Present in Park Uncommon Native Rosaceae Potentilla glandulosa var. nevadensis Present in Park Uncommon Native Rosaceae Potentilla glandulosa var. pseudorupestris Present in Park Common Native Rosaceae Potentilla gracilis var. elmeri Present in Park Unknown Native Rosaceae Potentilla gracilis var. fastigiata Unconfirmed NA Native Rosaceae Potentilla gracilis var. flabelliformis Present in Park Unknown Native Rosaceae Potentilla gracilis var. pulcherrima Present in Park Uncommon Native Rosaceae Prunus virginiana var. melanocarpa Present in Park Common Native Rosaceae Purshia tridentata Present in Park Common Native Rosaceae Rosa woodsii var. ultramontana Present in Park Rare Native Rosaceae Rubus idaeus Unconfirmed NA Native Rosaceae Rubus parviflorus var. parviflorus Present in Park Rare Native Rosaceae Sanguisorba minor Present in Park Uncommon Non-native Rubiaceae Galium aparine var. echinospermum Present in Park Uncommon Native Rubiaceae Galium bifolium Present in Park Uncommon Native Rubiaceae Galium boreale Unconfirmed NA Native Rubiaceae Galium multiflorum var. multiflorum Present in Park Uncommon Native Rubiaceae Galium trifidum Unconfirmed NA Native Rubiaceae Galium triflorum Unconfirmed NA Native Salicaceae Populus acuminata Present in Park Rare Unknown Salicaceae Populus angustifolia Present in Park Rare Unknown Salicaceae Populus tremuloides Present in Park Uncommon Native Salicaceae Populus trichocarpa Present in Park Rare Unknown Salicaceae Salix boothii Present in Park Rare Native Salicaceae Salix exigua ssp. exigua Present in Park Rare Native Salicaceae Salix geyeriana Unconfirmed NA Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 20 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Salicaceae Salix lasiandra var. caudata Present in Park Rare Native Salicaceae Salix scouleriana Present in Park Uncommon Native Santalaceae Comandra umbellata Unconfirmed NA Native Saxifragaceae Heuchera cylindrica Present in Park Uncommon Native Saxifragaceae Heuchera parvifolia Present in Park Uncommon Native Saxifragaceae Lithophragma glabrum Present in Park Common Native Saxifragaceae Lithophragma parviflorum Present in Park Uncommon Native Saxifragaceae Lithophragma tenellum Present in Park Common Native Saxifragaceae Saxifraga occidentalis Present in Park Rare Native Saxifragaceae Saxifraga oregana Present in Park Rare Native Scrophulariaceae Castilleja angustifolia var. angustifolia Present in Park Uncommon Native Scrophulariaceae Castilleja applegatei var. pinetorum Unconfirmed NA Native Scrophulariaceae Castilleja chromosa Present in Park Uncommon Native Scrophulariaceae Castilleja cusickii Present in Park Rare Native Scrophulariaceae Castilleja exilis Unconfirmed NA Native Scrophulariaceae Castilleja flava Present in Park Uncommon Native Scrophulariaceae Castilleja miniata Present in Park Common Native Scrophulariaceae Castilleja pallescens var. inverta Present in Park Rare Native Scrophulariaceae Castilleja pilosa var. longispica Unconfirmed NA Native Scrophulariaceae Castilleja rhexiifolia Present in Park Rare Native Scrophulariaceae Collinsia parviflora Present in Park Common Native Scrophulariaceae capitatus Present in Park Uncommon Native Scrophulariaceae Cordylanthus ramosus Present in Park Uncommon Native Scrophulariaceae Linaria genistifolia ssp. dalmatica NOXIOUS Encroaching NA Non-native Scrophulariaceae Mimulus floribundus Present in Park Rare Native Scrophulariaceae Mimulus guttatus Present in Park Uncommon Native Scrophulariaceae Mimulus lewisii Present in Park Rare Native Scrophulariaceae Mimulus nanus Present in Park Common Native Scrophulariaceae Mimulus pilosus Present in Park Rare Native Scrophulariaceae Mimulus suksdorfii Present in Park Common Native Scrophulariaceae Orthocarpus hispidus Present in Park Rare Native Scrophulariaceae Orthocarpus luteus Present in Park Rare Native Scrophulariaceae Penstemon acuminatus var. acuminatus Present in Park Rare Native Scrophulariaceae Penstemon attenuatus var. militaris Present in Park Uncommon Native Scrophulariaceae Penstemon barbatus Present in Park Rare Non-native Scrophulariaceae Penstemon cusickii Present in Park Rare Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 21 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Scrophulariaceae Penstemon cyananthus var. subglaber Present in Park Rare Unknown Scrophulariaceae Penstemon cyaneus Present in Park Common Native Scrophulariaceae Penstemon deustus Present in Park Common Native Scrophulariaceae Penstemon eatonii var. eatonii Present in Park Rare Non-native Scrophulariaceae Penstemon humilis var. humilis Present in Park Common Native Scrophulariaceae Penstemon montanus Present in Park Rare Native Scrophulariaceae Penstemon palmeri var. eglandulosus Present in Park Rare Non-native Scrophulariaceae Penstemon palmeri var. palmeri Present in Park Rare Non-native Scrophulariaceae Penstemon perpulcher Present in Park Uncommon Native Scrophulariaceae Penstemon procerus Unconfirmed NA Native Scrophulariaceae Penstemon pumilus Present in Park Uncommon Native Scrophulariaceae Penstemon radicosus Present in Park Rare Native Scrophulariaceae Penstemon speciosus Unconfirmed NA Unknown Scrophulariaceae Scrophularia lanceolata Present in Park Rare Native Scrophulariaceae Verbascum blattaria Present in Park Rare Non-native Scrophulariaceae Verbascum thapsus Present in Park Uncommon Non-native Scrophulariaceae Veronica americana Present in Park Uncommon Native Scrophulariaceae Veronica anagallis-aquatica Present in Park Uncommon Native Scrophulariaceae Veronica peregrina Present in Park Rare Native Solanaceae Hyoscyamus niger NOXIOUS Present in Park Rare Non-native Solanaceae Nicotiana attenuata Present in Park Uncommon Native Solanaceae Solanum triflorum Present in Park Rare Native Typhaceae Typha angustifolia Present in Park Rare Native Typhaceae Typha latifolia Present in Park Rare Native Ulmaceae Ulmus pumila Present in Park Rare Non-native Urticaceae Parietaria pensylvanica Present in Park Rare Native Urticaceae Urtica dioica ssp. gracilis var. procera Present in Park Uncommon Native Valerianaceae Valeriana acutiloba var. pubicarpa Present in Park Rare Native Valerianaceae Valeriana occidentalis Present in Park Rare Native Verbenaceae Verbena bracteata Present in Park Rare Native Violaceae Viola beckwithii Present in Park Uncommon Native Violaceae Viola nephrophylla Present in Park Rare Native Violaceae Viola nuttallii var. major Present in Park Uncommon Native Violaceae Viola nuttallii var. vallicola Present in Park Common Native Violaceae Viola purpurea var. venosa Present in Park Uncommon Native Viscaceae Arceuthobium cyanocarpum Present in Park Uncommon Native Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 22 of 23 NPSpecies Contractors Arco, Idaho, USA Craters of the Moon National Monument and Preserve Organized by Family 793 Taxa Checklist of Vascular Plants Family Scientific Name Park Status Park Abundance Park Nativity Viscaceae Arceuthobium douglasii Unconfirmed NA Native

Prepared by Steve J. Popovich and N. Duane Atwood October 15, 2006 Page 23 of 23 NPSpecies Contractors