CNPS Inventory Plant Detail

Castilleja densiflora ssp. obispoensis

Common Name:	San Luis Obispo owl's-clover
Family:	Orobanchaceae
Synonyms:
Element Code:	PDSCR0D453
Full Name:	Castilleja densiflora (Benth.) Chuang & Heckard ssp. obispoensis (Keck) Chuang & Heckard
USDA PLANTS Symbol:	CADEO

Biology
Lifeform: annual herb (hemiparasitic) Blooming Period: March - May Habitat: sometimes serpentinite. • Meadows and seeps • Valley and foothill grassland

Rarity Status
CA Rare Plant Rank: 1B.2 Rare, threatened, or endangered in California and elsewhere .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2.2 S2: Imperiled. .2: Threatened. Global Rank: G5T2 T2: Imperiled. G5: (species) Secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 42
Element Occurrence Ranks:

A B C D X U

5 9 10 1 0 17

Population Status:

Historic >20 yrs	Recent <=20 yrs
14	28

Presence:

Present Extant	Possibly Extirpated	Extirpated
42	0	0

Notes
Threatened by development and grazing. See Proceedings of the California Academy of Sciences IV 16:539 (1927) for original description, and Systematic Botany 16:656 (1991) for revised nomenclature. To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page. Date Added: 2001-01-01 Last Update: 2012-10-24

Location

Elevation: 10 - 400 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
San Luis Obispo (SLO)

Quads: name (DWR code) USGS code
Arroyo Grande NE (221A) 35120B5, Pismo Beach (221B) 35120B6, Oceano (221D) 35120A5, Port San Luis (222A) 35120B7, San Luis Obispo (246C) 35120C6, Lopez Mtn. (246D) 35120C5, Morro Bay North (247A) 35120D7, Cayucos (247B) 35120D8, Morro Bay South (247D) 35120C7, Paso Robles (269B) 35120F6, Adelaida (270A) 35120F7, San Simeon (271B) 35121F2, Pico Creek (271C) 35121E2, Cambria (271D) 35121E1, Piedras Blancas (272A) 35121F3, Bradley (294D) 35120G7, Burro Mountain (296D) 35121G3

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

1862

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Game: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

-120.75,35.375