CNPS Inventory Plant Detail

Calystegia stebbinsii

Common Name:	Stebbins' morning-glory
Family:	Convolvulaceae
Synonyms:
Element Code:	PDCON040H0
Full Name:	Calystegia stebbinsii Brummitt
USDA PLANTS Symbol:	CAST21

2002 Steve Tyron

Biology
Lifeform: perennial rhizomatous herb Blooming Period: Apr-Jul Habitat: gabbroic or serpentinite. • Chaparral (openings) • Cismontane woodland

Rarity Status
California Rare Plant Rank: 1B.1 Rare or endangered in California and elsewhere .1: Seriously endangered in California Federal Listing Status: FE Endangered (10/18/96) State Listing Status: CE Endangered (08/81) State Rank: S1 S1: Critically Imperiled. Global Rank: G1 G1: Critically Imperiled.

Occurrence Data from CDFW
California Natural Diversity Database

Total # of Known Element Occurrences: 15
Element Occurrence Ranks:

A B C D X U

1 2 7 1 4 0

Population Status:

Historic >20 yrs	Recent <=20 yrs
5	10

Presence:

Present Extant	Possibly Extirpated	Presumed Extirpated
11	3	1

Notes
Threatened by development, vehicles, road maintenance, clearing, and alteration of fire regimes; possibly threatened by non-native plants. See Kew Bulletin 29:499 (1975) 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: 2015-07-24

Location

Elevation: 185 - 1090 meters

California Endemic: yes

Other States:

California Counties and Islands: name (code)
El Dorado (ELD), Nevada (NEV)

Quads: name (DWR code) USGS code
Shingle Springs (510B) 3812068, Coloma (526C) 3812078, Pilot Hill (527D) 3812171, Foresthill (541D) 3912017, Grass Valley (542A) 3912121, Rough And Ready (542B) 3912122, Lake Combie (542D) 3912111

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. This data should NOT be substituted for pre-project review or for on-site surveys.

Presumed Extant

Presumed Extirpated or Unknown

121

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

Suggested Citation
California Native Plant Society, Rare Plant Program. . Inventory of Rare and Endangered Plants of California (online edition, v8-03). Website http://www.rareplants.cnps.org [accessed ].

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