Checklist1 of Vascular Flora of the Caliente Range San Luis Obispo County, California (3 June 2019) David J. Keil Robert F. Hoover Herbarium Biological Sciences Department California Polytechnic State University San Luis Obispo, California Scientific Name Common Name Family Rare n Abronia pogonantha desert sand-verbena NYCTAGINACEAE o n Acanthomintha obovata subsp. cordata heart-leaved thorn-mint LAMIACEAE 4.2 v n ❀ Achyrachaena mollis blow wives ASTERACEAE v n Acmispon brachycarpus shortpod deervetch FABACEAE v n Acmispon maritimus var. maritimus coastal deer-vetch FABACEAE v 1 Please notify the author of additions or corrections to this list ([email protected]). Some of the native plants on this list were introduced to the preserve as a part of site management and restoration. ❀ — See Wildflowers of San Luis Obispo, California, second edition (2018) for photograph. Most are illustrated in the first edition as well; old names for some species in square brackets. n — California native i — exotic species, introduced to California, naturalized or waif. v — documented by one or more specimens (Consortium of California Herbaria record; specimen in OBI; or collection that has not yet been accessioned). Some of these species are historical records and no longer occur at Sweet Springs. o — observed during field surveys; no voucher specimen known R—California Rare Plant Rank Scientific Name Common Name Family Rare n ❀ Acmispon strigosus strigose deer-vetch FABACEAE o n Acmispon wrangelianus California deervetch FABACEAE v n Agoseris heterophylla var. cryptopleura annual mountain-dandelion ASTERACEAE v n Agoseris retrorsa spear-leaved mountain- ASTERACEAE v dandelion i Ailanthus altissima tree of heaven SIMAROUBACEAE v n Allenrolfea occidentalis iodine bush CHENOPODIACEAE v n Allium diabolense Diablo onion ALLIACEAE v n Allium howellii var. howellii Howell's onion ALLIACEAE 1B.3 v n Allium peninsulare var. peninsulare peninsular onion ALLIACEAE v i Amaranthus albus tumble amaranth AMARANTHACEAE v n Ambrosia acanthicarpa annual bursage, burweed ASTERACEAE v n Ambrosia salsola var. salsola burrobrush ASTERACEAE v n Amsinckia intermedia common fiddleneck BORAGINACEAE v n ❀ Amsinckia menziesii small-flowered fiddleneck BORAGINACEAE v n Amsinckia tessellata var. gloriosa Carrizo fiddleneck BORAGINACEAE v n Amsinckia vernicosa waxy fiddleneck BORAGINACEAE v n Ancistrocarphus filagineus woolly fishhooks ASTERACEAE v n Androsace elongata subsp. acuta California rock-primrose PRIMULACEAE 4.2 v n Anisocoma acaulis scalebud ASTERACEAE v n Antirrhinum ovatum oval-leaved snapdragon PLANTAGINACEAE 4.2 v n Apiastrum angustifolium mock-celery APIACEAE v n Arctostaphylos glauca bigberry manzanita ERICACEAE v n mugwort ASTERACEAE v ❀ Artemisia douglasiana n Artemisia dracunculus wild tarragon ASTERACEAE v n Asclepias erosa desert milkweed APOCYNACEAE v Scientific Name Common Name Family Rare n Astragalus didymocarpus var. didymocarpus two-seeded milkvetch FABACEAE v n Astragalus douglasii var. douglasii Douglas's locoweed, FABACEAE v Douglas's milk-vetch n Astragalus gambelianus Gambel's milk-vetch FABACEAE o n Astragalus lentiginosus var. nigricalycis black-hair locoweed FABACEAE v n Astragalus macrodon Salinas locoweed, Salinas FABACEAE 4.3 v milk-vetch n Astragalus oxyphysus Diablo locoweed FABACEAE v n Athysanus pusillus dwarf sandweed BRASSICACEAE v n Athysanus unilateralis lady's-tongue mustard BRASSICACEAE v n Atriplex argentea var. expansa silverscale saltbush CHENOPODIACEAE v n Atriplex canescens var. canescens four-wing saltbush CHENOPODIACEAE v n Atriplex confertifolia shadscale saltbush CHENOPODIACEAE v n Atriplex fruticulosa ballscale, little oak orach CHENOPODIACEAE v n Atriplex lentiformis lens-scale saltbush, quailbush, CHENOPODIACEAE v big saltbush n Atriplex vallicola Lost Hills crownscale CHENOPODIACEAE 1B.2 v n Atriplex polycarpa allscale saltbush CHENOPODIACEAE v n Atriplex serenana var. serenana stinking orach CHENOPODIACEAE v n Atriplex spinifera spiny saltbush CHENOPODIACEAE v i Avena barbata slender wild oats POACEAE o i Avena fatua common wild oats POACEAE v n ❀ Baccharis pilularis coyote bush ASTERACEAE v n Blennosperma nanum var. nanum big tarweed ASTERACEAE v n ❀ Blitum californicum [Chenopodium California goosefoot CHENOPODIACEAE v californicum] n Blitum nuttallianum poverty-goosefoot CHENOPODIACEAE v Scientific Name Common Name Family Rare n ❀ Bloomeria crocea var. aurea common goldenstar THEMIDACEAE v n Boechera pulchra beautiful rockcress BRASSICACEAE v n Bowlesia incana bowlesia APIACEAE v n Brickellia nevinii Nevin's brickellbush ASTERACEAE v i Bromus berteroanus Chilean chess POACEAE v i Bromus diandrus ripgut brome POACEAE v i Bromus hordeaceus soft chess brome POACEAE v i Bromus rubens red brome POACEAE v i Bromus tectorum cheat grass, downy chess POACEAE v n ❀ Calandrinia menziesii [Calandrinia ciliata] red maids MONTIACEAE v n California macrophylla round-leaved filaree, California GERANIACEAE v filaree n Callitriche longipedunculata long-stalked water starwort PLANTAGINACEAE v n Calochortus clavatus var. pallidus pale-yellow mariposa lily LILIACEAE v n Calochortus splendens lilac mariposa lily LILIACEAE v n Calochortus venustus butterfly mariposa LILIACEAE v n Calyptridium monandrum sand-cress pussypaws MONTIACEAE v n Camissonia campestris subsp. campestris Mojave suncup ONAGRACEAE v n Camissonia contorta contorted-pod suncup ONAGRACEAE v n Camissonia strigulosa strigose suncup ONAGRACEAE v n Camissoniopsis hirtella hairy suncup ONAGRACEAE v n Camissoniopsis ignota petioled suncup ONAGRACEAE v n Camissoniopsis micrantha small-flowered suncup ONAGRACEAE v i Capsella bursa-pastoris shepherd's purse BRASSICACEAE v n Carex douglasii Douglas's sedge CYPERACEAE v n Castilleja attenuata valley tassels, narrow-leaved OROBANCHACEAE o owl's-clover Scientific Name Common Name Family Rare n Castilleja brevistyla short-styled owl's-clover OROBANCHACEAE v n Castilleja exserta subsp. exserta common owl's-clover OROBANCHACEAE v n Castilleja foliolosa woolly Indian paintbrush OROBANCHACEAE v n Castilleja plagiotoma Mojave Indian paintbrush OROBANCHACEAE 4.3 v n Castilleja subinclusa var. jepsonii longleaf Indian paintbrush OROBANCHACEAE v i ❀ Centaurea melitensis tocalote, Maltese star thistle ASTERACEAE v i ❀ Centaurea solstitialis yellow star thistle ASTERACEAE v n Centromadia pungens subsp. pungens common spikeweed ASTERACEAE v n Centrostegia thurberi red triangles, Thurber's POLYGONACEAE v spineflower n Chaenactis fremontii Fremont's pincushion ASTERACEAE v n Chaenactis glabriuscula var. glabriuscula common yellow pincushion ASTERACEAE v n Chaenactis glabriuscula var. lanosa sand buttons, woolly yellow ASTERACEAE o pincushion n Chaenactis glabriuscula var. megacephala big-headed yellow pincushion ASTERACEAE v n Chaenactis stevioides desert pincushion ASTERACEAE v n Chaenactis xantiana fleshy pincushion ASTERACEAE v i Chorispora tenella crossflower, purple mustard BRASSICACEAE v n Chorizanthe spinosa Mojave spineflower POLYGONACEAE v n Chorizanthe uniaristata one-awned spineflower POLYGONACEAE v n Chorizanthe watsonii Watson's spineflower POLYGONACEAE v n Chorizanthe xanti var. xanti pinyon spineflower POLYGONACEAE v n Clarkia cylindrica subsp. cylindrica speckled clarkia ONAGRACEAE v n ❀ Clarkia purpurea subsp. quadrivulnera fourspot clarkia ONAGRACEAE v n ❀ Clarkia unguiculata elegant clarkia ONAGRACEAE v n Claytonia exigua subsp. exigua pale spring beauty MONTIACEAE v Scientific Name Common Name Family Rare n Claytonia parviflora subsp. parviflora narrow-leaved miner's lettuce MONTIACEAE v n Claytonia parviflora subsp. viridis narrow-leaved miner's lettuce MONTIACEAE v n ❀ Claytonia perfoliata subsp. perfoliata common miner's lettuce MONTIACEAE v n Collinsia bartsiifolia var. davidsonii Davidson's Chinese houses PLANTAGINACEAE v n ❀ Collinsia heterophylla common Chinese houses PLANTAGINACEAE v i ❀ Convolvulus arvensis bindweed, field morning glory CONVOLVULACEAE v n ❀ Corethrogyne filaginifolia California-aster ASTERACEAE v n ❀ Crassula connata common pygmyweed CRASSULACEAE v n Cressa truxillensis alkali weed CONVOLVULACEAE v n ❀ Croton setiger turkey-mullein EUPHORBIACEAE v n Cryptantha barbigera var. barbigera bearded cryptantha BORAGINACEAE v n Cryptantha corollata coast range cryptantha BORAGINACEAE v n Cryptantha intermedia var. intermedia Nievitas cryptantha BORAGINACEAE v n Cryptantha muricata var. jonesii Jones's cryptantha BORAGINACEAE v n Cryptantha nemaclada Colusa cryptantha BORAGINACEAE v n Cryptantha nevadensis var. rigida rigid cryptantha BORAGINACEAE v n Cryptantha oxygona sharp-nut cryptantha BORAGINACEAE v n Cryptantha pterocarya var. pterocarya winged-nut cryptantha BORAGINACEAE v n Cuscuta californica var. californica common chaparral dodder CONVOLVULACEAE v n Cuscuta occidentalis western dodder CONVOLVULACEAE v n Datura wrightii western jimson weed SOLANACEAE v n Daucus pusillus American wild carrot APIACEAE o n Deinandra pentactis Salinas River tarweed ASTERACEAE o n Delphinium gypsophilum gypsum larkspur RANUNCULACEAE v Scientific Name Common Name Family Rare n Delphinium parishii subsp. pallidum Parish's larkspur RANUNCULACEAE v n Delphinium parryi subsp. parryi Parry's larkspur RANUNCULACEAE v n Delphinium patens subsp. montanum spreading larkspur RANUNCULACEAE v n Delphinium recurvatum valley larkspur RANUNCULACEAE 1B.2 v n Deschampsia danthonioides annual hairgrass POACEAE v n Descurainia pinnata subsp. brachycarpa western tansy-mustard BRASSICACEAE v i Descurainia sophia Eurasian tansy-mustard,