Rare Plants San Diego Chapter conservation contents Updated 10/6/01 by Ellen Kanner & Brad Buffett.

Rare Plants of San Diego County by Craig H. Reiser Copyright © May 1994 Craig H. Reiser Aquafir Press 1368 Grove Avenue Imperial Beach, CA 91932 Introduction Literature Cited Appendix 1. Plant Sensitivity Guidelines Pages: 1-49 | 50-99 | 100-149 | 150-199 | 200-234 Red Sand-Verbena [Abronia maritima Nutt. ex Wats.] Sweet Acacia [Acacia farnesiana (L.) Willd. var farnesiana] San Diego Thorn Mint [Acanthomintha ilicifolia (Gray) Gray] San Diego County Needlegrass [Achnatherum diegoensis (Swallen) Barkworth] California Adolphia [Adolphia californica Wats.] Shaw's Agave [Agave shawii Engelm.] San Diego Bur-Sage [Ambrosia chenopodiifolia (Benth.) Payne] San Diego Ambrosia [Ambrosia pumila (Nutt. Gray] Aphanisma [Aphanisma blitoides Nutt. ex Moq. in DC] Del Mar Manzanita [Arctostaphylos glandulosa Eastw. ssp. crassifolia (Jeps.) Wells] Otay Manzanita [Arctostaphylos otayensis Wies. & Schreib.] San Diego Sagewort [Artemisia palmeri Gray] Salton Sea Milk Vetch [Astragalus crotalariae (Benth.) Gray] Dean's Milk Vetch [Astragalus deanei (Rydb.) Barneby] Munz] Harwood's Milk Vetch [Astragalus insularis Kell. var. harwoodii Munz & McBurn.] Borrego Milk Vetch [Astragalus lentiginosus Dougl. var. borreganus Jones] Bear Valley Woollypod [Astragalus leucolobus Jones] Peirson's Milk Vetch (Astragalus magdalenae Greene var. peirsonii (Munz & McBurn) Barneby] Descanso Milk Vetch [Astragalus oocarpus Gray] Jaeger's Locoweed [Astragalus pachypus Greene var. jaegeri Munz & McBurn.] Coastal Dune Milk Vetch [Astragalus tener Gray var. titi (Eastw.) Barneby] Coulter's Saltbush [Atriplex coulteri (Moq.) D. Dietr.] South Coast Saltscale [Atriplex pacifica Nels.] to top Ayenia [Ayenia compacta Rose] Mexican Mosquito Fern [Azolla mexicana Presl.] Encinitas Baccharis [Baccharis vanessae Beauchamp] Fremont Barberry [Berberis fremontii Torrey var. fremontii = Mahonia higginsae Ahrendt] Nevin's Barberry [Berberis nevinii Gray = Mahonia nevinii (Gray) Fedde] Goldenspined Cereus [Bergerocactus emoryi (Engelm.) Britt. & Rose] Bergia [Bergia texana (Hook.) Seub.] Coulter Ringstem [Boerhavia coulteri (Hook.) S. Watson] Round-leaved Boykinia [Boykinia rotundifolia Parry] Thread-leaf Brodiaea [Brodiaea filifolia Wats.] Orcutt's Brodiaea [Brodiaea orcuttii (Greene) Hoover] Elephant Tree [Bursera microphylla Gray] Tufted Pine-grass [Calamagrostis koelerioides Vasey] Brewer's Calandrinia [Calandrinia breweri Wats.] Seaside Calandrinia [Calandrinia maritima Nutt.] Fairyduster [Calliandra eriophylla Benth.] Catalina Mariposa Lily [Calochortus catalinae Wats.] Dunn's Mariposa Lily [Calochortus dunnii Purdy] Lewis' Evening Primrose [Camissonia lewisii Raven] Arizona Carlowrightia [Carlowrightia arizonica Gray] San Bernardino Owl's Clover [Castilleja lasiorhyncha (Gray) Chuang & Heckard] Buck's Jewelflower [Caulanthus heterophyllus (Nutt.) Pays. var. pseudosimulans R. Buck] Payson's Jewel Flower [Caulanthus simulans Pays.] Lakeside Ceanothus [Ceanothus cyaneus Eastw.] Vail Lake Ceanothus [Ceanothus ophiochilus Boyd] to top Otay Mountain Ceanothus [Ceanothus otayensis McMinn] White Coast Ceanothus [Ceanothus verrucosus Nutt. in T. & G.] Peirson's Pincushion [Chaenactis carphoclinia Gray var. peirsonii (Jeps.) Munz] Parish's Chaenactis [Chaenactis parishii Gray] Southern Mountain Misery [Chamaebatia australis (Bdg.) Abrams] Flat-seeded Spurge [Chamaesyce platysperma (S. Watson.) Shinners] Sticky Lipfern [Cheilanthes viscida Davenp.] Peninsular Spineflower [Chorizanthe leptotheca Goodm.] Orcutt's Spineflower [Chorizanthe orcuttiana Parry] Long-spined Spineflower [Chorizanthe polygonoides T. & G. var. longispina (Goodman) Munz] Prostrate Spineflower [Chorizanthe procumbens Nutt.] Coast Turkish Rugging [Chorizanthe staticoides Benth. ssp. chrysacantha (Goodman) Munz] Delicate Clarkia [Clarkia delicata (Abrams) Nels. & MacBr.] Las Animas Colubrina [Colubrina californica Jtn.] Summer-Holly (Comarostaphylis diversifolia (Parry) Greene ssp. diversifolia] Small-flowered Morning Glory [Convolvulus simulans Perry] Salt Marsh Bird's Beak [Cordylanthus maritimus Nutt. ssp. maritimus] Orcutt's Bird's Beak [Cordylanthus orcuttianus Gray] Sea Dahlia [Coreopsis maritima (Nutt.) Hook. f.] Lessingia filaginifolia (Hook. & Arn.) Lane var. filaginifolia] filaginifolia (Hook. & Arn.) Lane var. filaginifolia] Crossosoma [Crossosoma bigelovii S. Watson] Ribbed Cryptantha [Cryptantha costata Bdg.] Gander's Cryptantha [Cryptantha ganderi Jtn.] Winged Cryptantha [Cryptantha holoptera (Gray) MacBr.] Tecate Cypress [Cupressus forbesii Jeps.] to top Arizona Cypress [Cupressus stephensonii Wolf] Utah Cynanchum [Cynanchum utahense (Engelm.) Woods.] Cuyamaca Larkspur (Delphinium hesperium Gray ssp. cuyamacae (Abrams) Lewis & Epling] Parish's Larkspur (Delphinium parishii Gray ssp. subglobosum (Wiggins) Lewis & Epling] Western Dichondra [Dichondra occidentalis House] Cuyamaca Lake Downingia [Downingia concolor Greene var. brevior McVaugh] Banner Dudleya [Dudleya alainae Reiser] Orcutt's Dudleya [Dudleya attenuata (Wats.) Moran ssp. orcuttii (Rose) Moran] Blochman's Dudleya [Dudleya blochmaniae (Eastw.) Moran ssp. blochmaniae] Short-leaved Dudleya [Dudleya blochmaniae (Eastw.) Moran ssp. brevifolia Moran] Many-Stemmed Dudleya [Dudleya multicaulis (Rose) Moran] Variegated Dudleya [Dudleya variegata (Wats.) Moran] Munz's Hedgehog Cactus (Echinocereus engelmannii (Parry) Ruempler var. munzii Pierce & Fosb.] Laguna Mountains Goldenbush [Ericameria cuneata (Gray) McClatchie var. macrocephala Urbatsch] Palmer's Goldenbush [Ericameria palmeri (Gray) Hall ssp. palmeri] Leafy Buckwheat [Eriogonum foliosum Wats.] Large-leaved Filaree [Erodium macrophyllum H. & A.] San Diego Button Celery [Eryngium aristulatum Jeps. ssp. parishii (Coult. & Rose) Math. & Const.] Coast Wallflower [Erysimum ammophilum Heller] Rock Nettle [Eucnide rupestris (Baill.) Thompson & Ernst] Cliff Spurge [Euphorbia misera Benth.] California Barrel Cactus [Ferocactus cylindraceus (Engelm.) Orc. var. cylindraceus] San Diego Barrel Cactus [Ferocactus viridescens (T. & G.) Britton & Rose] Palmer's Frankenia [Frankenia palmeri Wats.] to top Chaparral Ash [Fraxinus jonesii Lingel.] Mexican Flannelbush [Fremontodendron mexicanum A Davids.] Chocolate Lily [Fritillaria biflora Lindl. var. biflora] Borrego Bedstraw [Galium angustifolium Nutt. ssp. borregoense Dempster] Johnson's Bedstraw [Galium johnstonii Dempster & Stebbins] Nuttall's Island Bedstraw [Galium nuttallii Gray ssp. insulare Ferris] Sticky Geraea [Geraea viscida (Gray) Blake] Caraway-leaved Gilia [Gilia caruifolia Abrams] Mission Canyon Blue-Cup [Githopsis diffusa Gray ssp. filicaulis (Ewan) Morin] San Diego Gumplant [Grindelia hirsutula Hook. & Arn. var. hallii (Steyerm.) M. A. Lane] Palmer's Grappling Hook [Harpagonella palmeri Gray = Pectocarya palmeri (Gray) Veno] Orcutt's Hazardia [Hazardia orcuttii (Gray) Greene] Otay Tarplant [Hemizonia conjugens Keck] Tecate Tarplant [Hemizonia floribunda Gray] Southern Tarplant [Hemizonia parryi (Greene) ssp. australis Keck] Smooth Tarplant [Hemizonia pungens (Hook. & Arn.) Torrey & Gray ssp. laevis Keck] Curly Abutilon [Herissantia crispa (L.) Brizicky] Beach Goldenaster [Heterotheca sessiliflora (Nutt.) Shinn. ssp. sessiliflora] Laguna Mountains Alum-Root [Heuchera brevistaminea Wiggins] San Diego County Alum-Root [Heuchera rubescens Torrey var. versicolor (Greene) Stewart] Graceful Tarplant [Holocarpha virgata (Gray) Keck ssp. elongata Keck] Vernal Barley [Hordeum intercedens Nevski] Cleveland Horkelia [Horkelia clevelandii (E. Greene) Rydb.] Ramona Horkelia [Horkelia truncata Rydb.] San Diego Sunflower [Hulsea californica T. & G. ex Gray] Mexican Hulsea [Hulsea mexicana Rydb.] to top Beautiful Hulsea [Hulsea vestita Gray ssp. callicarpha (Hall) Wilken] Slender-leaved Ipomopsis [Ipomopsis tenuifolia (Gray) V. Grant] Decumbent Goldenbush [Isocoma menziesii (Hook. & Arn.) Nesom var. decumbens (Greene) Nesom] San Diego Marsh Elder [Iva hayesiana Gray] Southern California Black Walnut [Juglans californica Wats. var. californica] Southwestern Spiny Rush [Juncus acutus L. ssp. leopoldii (Parl.) Snog.] California Kallstroemia [Kallstroemia californica (Watson) Vail] Crowned Goldfields [Lasthenia coronaria (Nutt.) Ornduff] Coulter's Goldfields [Lasthenia glabrata Lindl. ssp. coulteri (Gray) Ornduff] Pride-of-California [Lathyrus splendens Kell.] Heart-leaved Pitcher Sage [Lepechinia cardiophylla Epling] Gander's Pitcher Sage [Lepechinia ganderi Epling] Borrego Valley Pepper-grass [Lepidium flavum Torr. var. felipense C. L. Hitchc.] Dwarf Pepper Grass [Lepidium latipes Hook. var. latipes] Robinson Pepper-grass [Lepidium virginicum L. var. robinsonii (Thell.) Hitchc.] Warner Springs Lessingia [Lessingia glandulifera Gray var. tomentosa (Greene) Ferris] Short-sepaled Lewisia [Lewisia brachycalyx Engelm. ex Gray] Ocellated Humboldt Lily (Lilium humboldtii Roezl. & Leichtl. ssp. ocellatum (Kell) Elwes] Lemon Lily [Lilium parryi Wats.] Parish's Meadow-Foam [Limnanthes gracilis T. J. Howell var. parishii (Jeps.) C. Mason] Desert Beauty [Linanthus bellus (Gray) Greene] Santa Rosa Mountains Linanthus [Linanthus floribundus (Gray) Munz ssp. hallii Mason] Orcutt's Linanthus [Linanthus orcuttii (Parry & Gray) Jeps.] Otay Mountain Lotus [Lotus crassifolius (Benth.) Greene var. otayensis Moran] to top Pygmy Lotus [Lotus haydonii (Orcutt) Greene] Nuttall's Lotus [Lotus nuttallianus Greene] Mountain Springs Bush Lupine [Lupinus excubitus Jones var. medius (Jepson) Munz] Parish's Desert-thorn [Lycium parishii Gray] Coulter's Lyrepod [Lyrocarpa coulteri Hook. & Harv. var. palmeri (Wats.) Roll.] Laguna Mountains Aster [Machaeranthera asterioides Greene var. lagunensis (Keck) Turner] Rush-like Bristleweed [Machaeranthera juncea (Greene) Shinners = Haplopappus junceus Greene] Indian Valley Bush Mallow [Malacothamnus aboriginum (Rob.) Greene] Brown Turbans [Malperia tenuis Wats.] Spearleaf [Matelea parvifolia (Torr.) Woods] Hairy Stickleaf [Mentzelia hirsutissima Wats.] Small-flowered Microseris [Microseris douglasii (DC) Sch.-Bip ssp. platycarpha (Gray) Chambers] Low Bush Monkey Flower [Mimulus aridus (Abrams) Grant = Diplacus aridus Abrams] Cleveland's Bush Monkey Flower [Mimulus clevelandii Bdg.] Palomar Monkeyflower [Mimulus diffusus Grant] Slender-lobed Four O'Clock [Mirabilis tenuiloba Wats.] Felt-leaved Monardella (Monardella hypoleuca Gray ssp. lanata (Abrams) Munz] Willowy Monardella [Monardella linoides Gray ssp. viminea (Greene) Abrams] Halls Monardella [Monardella macrantha Gray ssp. hallii Abrams] San Felipe Monardella [Monardella nana Gray ssp. leptosiphon (Torr.) Abrams] California Spineflower [Mucronea californica Benth.] San Diego Golden Star [Muilla clevelandii (Wats.) Hoover] Little Mousetail [Myosurus minimus L. ssp. apus Greene] Mud Nama [Nama stenocarpum Gray] Spreading [Navarretia fossalis Moran] Baja Navarretia [Navarretia peninsularis Greene] to top Coast Wooly-heads [Nemacaulis denudata Nutt. var. denudata] Slender Woolly-heads [Nemacaulis denudata Nutt. var. gracilis Goodm. & Benson] Cismontane Nolina [Nolina cismontana Dice in edit.] Dehesa Nolina [Nolina interrata Gentry] California Cloakfern [Notholaena californica D. C. Eat.] California Adder's Tongue Fern [Ophioglossum californicum Prantl] Hoffman's Cholla [Opuntia X fosbergii Wolf] Snake Cholla [Opuntia parryi Engelm. var. serpentina (Engelm.) L. Benson] Wiggins' Cholla [Opuntia wigginsii L. Benson] Wolf's Cholla [Opuntia wolfii (Benson) Baker] California Orcutt Grass [Orcuttia californica Vasey] Baja California Birdbush [Ornithostaphylos oppositifolia (Parry) Small] Short-lobed Broom-rape [Orobanche parishii (Jeps.) Heckard ssp. brachyloba Heckard] California Penstemon [Penstemon californicus (Munz & Jtn.) Keck] San Jacinto Beardtongue [Penstemon clevelandii Gray var. connatus (Munz & Jtn.) Holmgren] Thurber's Beardtongue [Penstemon thurberi Torr.] Gairdner's Yumpah [Perideridia gairdneri (H. & A.) Math. ssp. gairdneri] Wild Petunia [Petunia parviflora Juss] Brand's Phacelia [Phacelia stellaris Brand] White Fiesta Flower [Pholistoma racemosum (Nutt.) Constance] Thurber's Pilostyles [Pilostyles thurberi Gray] Torrey Pine [Pinus torreyana Parry ex Carr. ssp. torreyana] San Bernardino Blue Grass [Poa atropurpurea Scribn.] San Diego Mesa Mint [Pogogyne abramsii J. T. Howell] Otay Mesa Mint [Pogogyne nudiuscula Gray] to top Fish's Milkwort [Polygala cornuta Kell. var. fishiae (Parry) Jepson] Desert Unicorn Plant [Proboscidea althaeifolia (Benth.) Dcne.] Nuttall's Scrub Oak [Quercus dumosa Nutt. in part] Engelmann Oak [Quercus engelmannii Greene] Moreno Current [Ribes canthariforme Wiggins] Santa Catalina Island Currant [Ribes viburnifolium Gray] Coulter's Matilija Poppy [Romneya coulteri Harvey] Coast Matilija Poppy [Romneya trichocalyx Eastw.] Gambel's Water Cress [Rorippa gambellii (S. Wats.) Roll. & Al-Shehbaz] Small-leaved Rose [Rosa minutifolia Engelm. in Parry] Cuyamaca Raspberry [Rubus glaucifolius Kell var. ganderi (Bailey) Munz] Parish's Rupertia [Rupertia rigida (Parish) Grimes] Desert Sage [Salvia eremostachya Jeps.] Munz's Sage [Salvia munzii Epling] San Miguel Savory [Satureja chandleri (Bdg.) Druce.] Southern Skullcap [Scutellaria bolanderi Gray ssp. austromontanum Epling] Bluish Spike-moss [Selaginella asprella Maxon.] Ashy Spike-moss [Selaginella cinerascens A. A. Eat.] Desert Mossfern [Selaginella eremophila Maxon.] Rayless Ragwort [Senecio aphanactis Greene] Gander's Ragwort [Senecio ganderi Barkley & Beauchamp] Coves' Cassia [Senna covesii (Gray) Irwin & Barneby = Cassia covesii (Gray)] Narrow-leaved Nightshade [Solanum tenuilobatum Parish] Spermolepis [Spermolepis echinata (DC.) A.A. Heller] Laguna Mountains Jewel-flower [Streptanthus bernardinus (Greene) Parish] Southern Jewel-flower [Streptanthus campestris Wats.] Oil Neststraw [Stylocline citroleum Morefield] Estuary Seablite [Suaeda esteroa Ferren & Whitmore] Woolly Seablite [Suaeda taxifolia (Standley) Standley] Parry's Tetracoccus [Tetracoccus dioicus Parry] Velvety False Lupine [Thermopsis californica Wats. var. semota (Jeps.) Chen & Turner] San Diego County Viguiera [Viguiera laciniata Gray in Torr.] California Fan Palm [Washingtonia filifera (Lindl.) Wendl.] Orcutt's Woody-aster [Xylorhiza orcuttii (Vasey & Rose) Greene] to top