YUMA PROVING GROUND FLORA LISTS

PERENNIALS Acanthaceae Justica californica Hummingbird bush Agave deserti Desert agave Agavaceae Nolina bigelovii Bigelow nolina Anacardiaceae Rhus trilobata Skunkbush sumac Aristolochiaceae Aristolochia watsonii Watson's dutchman's pipe Asclepias albicans Whitestem milkweed Asclepias subulata Rush milkweed Asclepiadaceae Funastrum cynanchoides Fringed twinevine Funastrum hirtellum Hairy milkweed Adenophyllum porophylloides San Felipe dogweed Ambrosia ambrosioides Canyon Ambrosia dumosa White bursage Hollyleaf bursage Baccharis salicifolia Mulefat Baccharis sarothroides Desertbroom baccharis Bebbia juncea Rush sweetbush Brickellia atractyloides Spearleaf brickellia Brickellia coulteri Coulter's brickellbush Encelia farinosa Brittlebush Encelia frutescens Button brittlebush Gutierrezia sarothrae Broom snakeweed Hymenoclea salsola White burrobush Machaeranthera pinnatifida Lacy tansyaster Peucephyllum schottii Schott's pigmycedar Pleurocoronis pluriseta Bush arrowleaf Pluchea odorata Sweetscent Pluchea sericea Arrowweed Porophyllum gracile Slender poreleaf Psilostrophe cooperi Whitestem paperflower Stephanomeria pauciflora Brown plume wire lettuce Trixis californica American threefold Viguiera parishii Parish's goldeneye Xylorhiza tortifolia Mojave woody‐aster Berberidaceae Mahonia haematocarpa Red barberry Bigoniaceae Chilopsis linearis Desert willow Heliotropium curassavicum Salt heliotrope Boraginaceae Tiquilia canescens Woody crinklemat

Tiquilia palmeri Palmer's crinklemat Carnegiea gigantea Saguaro acanthocarpa Buck‐horn cholla Teddybear cholla Cylindropuntia echinocarpa Silver cholla Cylindropuntia leptocaulis Christmas Cylindropuntia ramosissima Diamond cholla Echinocactus horizonthalonius var. nicholii Nichol's turkshead cactus Echinocereus engelmannii Engelman's hedgehog cactus Cactaceae Echinocereus nicholii Nichol's hedgehog cactus Ferocactus cylindraceus barrel cactus Ferocactus wislizeni Candy barrel cactus Mammillaria grahamii Graham's fish hook cactus Mammillaria tetrancistra Common fish‐hook cactus Opuntia basilaris Beavertail prickly pear Opuntia kunzei Devil's cholla Peniocereus greggii Night‐blooming cereus Sclerocactus johnsonii Johnson's fishook cactus Capparaceae Koeberlinia spinosa Spiny all‐thorn Atriplex canescens Four‐winged saltbush Atriplex hymenelytra Desert holly saltbush Chenopodiaceae Atriplex lentiformis Big saltbush Atriplex polycarpa Cattle saltbush Crossosomataceae Crossosoma bigelovii Ragged rockflower Brandegea bigelovii Desert starvine Cucurbitaceae Cucurbita digitata Fingerleaf gourd Cuscutaceae Cuscuta californica dodder Cyperus laevigatus Smooth flatsedge Eleocharis geniculata Canada spikesedge Cyperaceae Schoenoplectus americanus American bulrush Schoenoplectus maritimus Cosmopolitan bulrush Schoenoplectus pungens Common threesquare Ephedra trifurca Long mormon tea Ephedraceae Ephedra viridis Green mormon tea Argythamnia adenophora Sonoran silverbush Argythamnia lanceolata Narrowleaf silverbush Euphorbiaceae incana Horay myrtle‐croton Croton californicus California croton Acacia greggii Catclaw acacia Fabaceae Caesalpinia virgata Wand holdback

Calliandra eriophylla Pink fairyduster Dalea neomexicana Downy prairie‐clover Olneya tesota Ironwood Parkinsonia aculeata Mexican palo verde Parkinsonia florida Blue palo verde Parkinsonia microphylla Yellow palo verd Prosopis glandulosa Honey mesquite Prosopis velutina Velvet mesquite Prosopis pubescens Screwbean mesquite Psorothamnus emoryi Emory dalea Psorothamnus schottii Schott's dalea Psorothamnus spinosus Smoketree Senna covesii Desert senna Fouquieriaceae Fouquieria splendens Ocotillo Krameria erecta Range ratany Krameriaceae Krameria grayi White ratany Hyptis emoryi Desert lavender Lamiaceae Salazaria mexicana Mexican bladdersage Malpighiaceae Janusia gracilis Slender janusia Hibiscus coulteri Desert rosemallow Hibiscus denudatus Paleface hibiscus Horsfordia alata Big feltplant Malvaceae Horsfordia newberryi Yellow feltplant Sphaeralcea ambigua Desert globemallow Sphaeralcea emoryi Emory's globemallow Najadaceae Najas marina Spiny naiad Nyctaginaceae Mirabilis bigelovii Bigelow four o'clock Oleaceae Menodora scabra Rough menodora Hall's shrubby spurge Plantaginaceae Penstemon pseudospectabilis Bearded tounge Achnatherum speciosum Desert needle grass Aristida adscensionis Sixweeks threeawn Aristida californica California threeawn Aristida purpurea Purple threeawn Aristida purpurea var. parishii Parish's threeawn Poaceae Aristida ternipes Spider threeawn Bothriochloa barbinodis Cane bluestem Bouteloua aristidoides Needle grama Bouteloua barbata Sixweek grama Bouteloua trifida Red grama

Bromus marginatus Mountain brome Chloris virgata Feather fingergrass Dasyochloa pulchella Low woollygrass Eriochloa acuminata Tapertip cupgrass Eriochloa aristata Bearded cupgrass Heteropogon contortus Tanglehead Leptochloa dubia Green sprangletop Leptochloa fusca Mexican sprangletop Leptochloa panicea Mucronate sprangltop Muhlenbergia microsperma Littleseed muhly Muhlenbergia porteri Porter's muhly Panicum hirticaule Mexican panic grass Pleuraphis rigida Big galleta Poa bigelovii Bigelow bluegrass Sporobolus cryptandrus Sand dropseed Tridens eragrostoides Lovegrass tridens Tridens muticus Rough tridens Urochloa fusca Browntop signalgrass Vulpia microstachys Pacific fescue Vulpia octoflora Sixweeks fescue Eriogonum fasciculatum California flattop buckwheat Polygonaceae Eriogonum wrightii Bastardsage Pteridaceae Cheilanthes parryi Parry's lipfern Ranunculaceae Clematis drummondii Drummond's clematis Colubrina californica Las Animas nakedwood Rhamnaceae Condalia globosa Bitter snakewood Ziziphus obtusifolia Gray‐thorn Rubiaceae Galium stellatum Starry bedstraw Ruppiaceae Ruppia maritima Widgeongrass Rutaceae Thamnosma montana Turpentime broom Populus fremontii Fremont's cottonwood Salicaceae Salix exigua Narrow‐leaved willow Simaroubaceae Castela emoryi Crucifixion thorn Simmondsia chinensis Lycium andersonii Anderson's wolfberry Lycium cooperi Peach thorn Lycium fremontii Fremont's desert‐thorn Solanaceae Lycium parishii Parish's desert‐thorn Physalis lobata Purple ground cherry Solanum elaeagnifolium Silverleaf nightshade

Sterculiaceae Ayenia microphylla Dense ayenia Typhaceae Typha domingensis Southern cattail Verbenaceae Aloysia wrightii Wright's bee brush Viscaceae Phoradendron californicum Desert mistletoe laevis California fagonia Fagonia pachyacantha Sticky fagonia Creosote bush