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And Type Chapter Number Table E-1. Special-Status Plants Known to Occur or that May Occur in the Project Area Page 1 of 6 Statusa Likelihood to Occur Species Federal/State/CNPS California Distribution Habitats Blooming Period in Project Areac Acanthomintha duttonii E/E/1B.1 San Mateo County endemic. Chaparral, valley and foothill April-June None—there is no San Mateo thorn-mint grassland with serpentine soils suitable habitat from 160 to 985 feet above within the study area mean sea level (MSL). as the study area is completely developed. Allium peninsulare var. –/–/1B.2 Mendocino, Sonoma, Marin, San Mateo, Cismontane woodland, and May-June None—there is no franciscanum and Santa Clara Counties. valley and foothill grassland suitable habitat Franciscan onion with clay, volcanic, and often within the study area serpentine soils from 170 to 985 as the study area is feet above MSL. completely developed. Arctostaphylos regismontana –/–/1B.2 San Mateo, Santa Cruz, Alameda, and Broad-leafed upland forest, January-April None—there is no Kings Mountain Manzanita Santa Clara Counties. chaparral, and north coast suitable habitat coniferous forest on granitic or within the study area sandstone soils from 1000 to as the study area is 2395 feet above MSL. completely developed. Centromadia parryi ssp. –/–/1B.2 Eastern San Francisco Bay Area, Salinas Lower slopes, flats, and swales June–November None—there is no congdonii Valley, and Los Osos Valley. in annual grasslands; locally on suitable habitat Congdon’s tarplant alkaline or saline soils at within the study area elevations from MSL to 700 as the study area is feet. completely developed. Cirsium fontinale var. E/E/1B.1 San Mateo and San Francisco Counties. Chaparral openings, cismontane May-October None—there is no fontinale woodland, and valley and suitable habitat Fountain thistle foothill grassland typically within the study area associated with serpentine soils as the study area is and seeps from 145 to 575 feet completely above MSL. developed. Table E-1. Continued Page 2 of 6 Statusa Likelihood to Occur Species Federal/State/CNPS California Distribution Habitats Blooming Period in Project Areac Cirsium praeteriens –/–/1A Santa Clara and San Mateo Counties. From MSL to 330 feet above June-July None—there is no Lost thistle MSL. suitable habitat within the study area as the study area is completely developed. Collinsia multicolor –/–/1B.2 Monterey, Santa Cruz, San Francisco, Northern coastal scrub and March-May None—there is no San Francisco collinsia and San Mateo. closed-cone pine forest. suitable habitat within the study area as the study area is completely developed. Cordylanthus maritimus ssp. –/–/1B Coastal northern California, from Coastal salt marsh. July-September None—there is no palustris Humboldt to Santa Clara County; suitable habitat Oregon. within the study area as the study area is completely developed. Dirca occidentalis –/–/1B.2 Sonoma, Marin, Solano, Contra Costa, Broad-leafed upland forest, January-March None—there is no Western leatherwood Alameda, Santa Clara, and San Mateo closed-cone coniferous forest, (April uncommon) suitable habitat Counties. chaparral, cismontane woodland, within the study area north coast coniferous forest, as the study area is riparian forest, and riparian completely woodland (mesic areas) from developed. 160 to 1300 feet above MSL. Eryngium aristulatum var. –/–/1B.1 San Benito, San Luis Obispo, and Santa Vernal pools. July None—there is no hooveri Clara Counties. suitable habitat Hoover’s button-celery within the study area as the study area is completely developed. Table E-1. Continued Page 3 of 6 Statusa Likelihood to Occur Species Federal/State/CNPS California Distribution Habitats Blooming Period in Project Areac Fritillaria lilacea –/–/1B.2 Alameda, Contra Costa, Monterey, Coastal prarie, valley grassland, February-April None—there is no Fragrant fritillary Marin, Santa Clara, San Mateo, San northern coastal scrub, and suitable habitat Francisco, San Benito, Solano, and wetland-riparian. within the study area Sonoma. as the study area is completely developed. Hesperolinon congestum T/T/1B.2 Colusa, Sonoma, Marin, San Francisco, Chaparral and valley and foothill April-July None—there is no Marin western flax and San Mateo Counties. grassland with serpentine soils suitable habitat from 15 to 1215 feet above within the study area MSL. as the study area is completely developed. Lessingia arachnoidea –/–/1B San Mateo County, 1 location from Serpentine grassland and open July-October None—there is no Crystal Springs lessingia Sonoma County. grassy areas in serpentine suitable habitat chaparral, cismontane woodland. within the study area as the study area is completely developed. Malacothamnus arcuatus –/–/1B.2 Santa Cruz, San Mateo, and Santa Clara. Chaparral. April-July None—there is no Accurate bush mallow suitable habitat within the study area as the study area is completely developed. Malacothamnus davidsonii –/–/1B.2 San Mateo, Santa Clara, Monterey, San Chaparral, cismontane June-January None—there is no Davidson’s bush-mallow Luis Obispo, Santa Barbara, and Los woodland, coastal scrub, and suitable habitat Angeles Counties. riparian woodland from 605 to within the study area 2805 feet above MSL. as the study area is completely developed. Table E-1. Continued Page 4 of 6 Statusa Likelihood to Occur Species Federal/State/CNPS California Distribution Habitats Blooming Period in Project Areac Malacothamnus hallii –/–/1B.2 Alameda (suspected), Contra Costa, Chaparral. May-September None—there is no Hall’s bush mallow Merced, and Santa Clara. suitable habitat within the study area as the study area is completely developed. Monolopia gracilens –/–/1B.2 Contra Costa, Alameda, San Mateo, Broad-leafed upland forest, (February None—there is no Woodland woollythreads Santa Clara, Santa Cruz, Monterey, and chaparral openings, cismontane uncommon) suitable habitat San Luis Obispo Counties. woodland, north coast March-July within the study area coniferous forest openings, and as the study area is valley and foothill grassland completely with serpentine soils from 325 to developed. 3940 feet above MSL. Pentachaeta bellidiflora E/E/1B One occurrence in San Mateo County, Annual grassland, often on March-May None—there is no White-rayed pentachaeta historically known also from Marin and serpentine soils. suitable habitat Santa Cruz Counties. within the study area as the study area is completely developed. Plagiobothrys chorisianus –/–/1B Southwest San Francisco Bay Area, Chaparral, coastal prairie, March-June None—there is no var. chorisianus northern Central Coast: Santa Cruz, San coastal scrub, in mesic areas. suitable habitat Francisco and San Mateo Counties. within the study area as the study area is completely developed. Silene verecunda ssp. –/–/1B Northern Central Coast, San Francisco Coastal bluff scrub, chaparral, March-August None—there is no veracunda Bay area: San Francisco, San Mateo, coastal prairie, coastal scrub, suitable habitat Santa Cruz, and Sutter Counties. valley and foothill grassland, in within the study area sandy areas, 100 to 2100 above as the study area is MSL. completely developed. Table E-1. Continued Page 5 of 6 Statusa Likelihood to Occur Species Federal/State/CNPS California Distribution Habitats Blooming Period in Project Areac Stuckenia filiformis –/–/2.2 Siskiyou, Modoc, Shasta, Lassen, Sierra, Freshwater marshes and swamps May-July None—there is no Slender-leaved pondweed Plumas, Butte, Nevada, El Dorado, with shallow areas from 985 to suitable habitat Mendocino, Sonoma, Solano, Contra 7055 feet above MSL. within the study area Costa, Alameda, Santa Clara, San as the study area is Mateo, Santa Cruz, Merced, Mariposa, completely Tuolumne, and Mono Counties. developed. Trifolium amoenum –/–/1B Coast Range foothills, San Francisco Low elevation grasslands, April-June None—there is no Saline clover Bay region from Mendocino County to including swales and disturbed suitable habitat Santa Clara County. areas, sometimes on serpentine within the study area soils. as the study area is completely developed. Triphysaria floribunda –/–/1B Marin, San Francisco, and San Mateo Coastal prairie and annual April-May None—there is no San Francisco owl’s clover Counties. grassland, on serpentine soils. suitable habitat within the study area as the study area is completely developed. Tropidocarpum capparideum –/–/1B.1 Historically known from the northwest Grasslands in alkaline hills. March–April None—there is no Caper-fruited San Joaquin Valley and adjacent Coast suitable habitat tropidocarpum Range foothills. within the study area as the study area is completely developed. Table E-1. Continued Page 6 of 6 Statusa Likelihood to Occur Species Federal/State/CNPS California Distribution Habitats Blooming Period in Project Areac MSL = Mean Sea Level a Status explanations: Federal E = listed as endangered under the ESA – = no listing State E = listed as endangered under the CESA – = no listing California Native Plant Society (CNPS) 1A = List 1A species: presumed extinct in California 1B = List 1B species: rare, threatened, or endangered in California and elsewhere 2 = List 2 species: rare, threatened, or endangered in California but more common elsewhere CNPS Code Extensions: 0.1 = seriously endangered in California (over 80% of occurrences threatened / high degree and immediacy of threat 0.2 = fairly endangered in California (20- 80% of occurrences threatened) b Populations uncertain or extirpated in the county c Definitions of levels of Occurrence likelihood: Moderate: Plant known to occur in the region from the CNDDB, or other documents in the vicinity of the project, or habitat conditions are of suitable quality. Low: Plant not known to occur in the region from the CNDDB, or other documents in the vicinity of the project; or habitat conditions are of poor quality. None: Plant not known to occur in the region from the CNDDB, or other documents in the vicinity of the project; or suitable habitat is not present in any condition. Source: CNPS, 2011. .
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