CNPS Inventory Plant Detail

Clarkia speciosa ssp. immaculata

Common Name:	Pismo clarkia
Family:	Onagraceae
Synonyms:
Element Code:	PDONA05111
Full Name:	Clarkia speciosa Lewis & Lewis ssp. immaculata Lewis & Lewis
USDA PLANTS Symbol:	CLSPI

Biology
Lifeform: annual herb Blooming Period: May - July Habitat: sandy. • Chaparral (margins, openings) • Cismontane woodland • Valley and foothill grassland

Rarity Status
Rare Plant Rank: 1B.1 Rare, threatened, or endangered in California and elsewhere .1: Seriously endangered in California Federal Listing Status: FE Endangered (12/15/94) State Listing Status: CR Rare (11/78) State Rank: S1 S1: Critically Imperiled. Global Rank: G4T1 T1: Critically Imperiled. G4: (species) Apparently secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Historic >20 yrs	Recent <=20 yrs
10	9

Presence:

Present Extant	Possibly Extirpated	Extirpated
14	3	2

Notes
Threatened by development and road maintenance, and possibly by grazing. USFWS uses the name C. speciosa var. immaculata. See University of California Publications in Botany 20:291 (1955) for original description. To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page. Date Added: 1980-01-01 Last Update: 2013-05-09

Location

Elevation: 25 - 185 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

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

170

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

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society. Sacramento, CA. Accessed on .

-120.5,35.125