CNPS Inventory Plant Detail

Calystegia collina ssp. tridactylosa

Common Name:	three-fingered morning-glory
Family:	Convolvulaceae
Synonyms:
Element Code:	PDCON04036
Full Name:	Calystegia collina (E.Greene) Brummitt ssp. tridactylosa (Eastw.) Brummitt
USDA PLANTS Symbol:	CACOT

Biology
Lifeform: perennial rhizomatous herb Blooming Period: April - June Habitat: serpentinite, rocky, gravelly, openings. • Chaparral • Cismontane woodland

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: 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

Total # of Known Element Occurrences: 3
Element Occurrence Ranks:

A B C D X U

0 0 0 0 0 3

Population Status:

Historic >20 yrs	Recent <=20 yrs
2	1

Presence:

Present Extant	Possibly Extirpated	Extirpated
3	0	0

Notes

Potentially threatened by geothermal energy development. May intergrade with Calystegia occidentalis ssp. occidentalis and Calystegia malacophylla ssp. malacophylla. See Proceedings of the California Academy of Sciences, series 4, 20: 151 (1931) for original description and Annals of the Missouri Botanical Garden 52(2): 214-216 (1965) 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: 2006-11-17
Last Update: 2010-03-15

Location

Elevation: 0 - 600 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Lake (LAK), Mendocino (MEN)

Quads: name (DWR code) USGS code
Leesville (547B) 39122B4, Hough Springs (548A)? 39122B5, Jamison Ridge (582B)? 39123F2, Brushy Mtn. (582C) 39123E2, Dos Rios (583A) 39123F3, Covelo East (598C) 39123G2

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

3192

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 .

-123.125,39.5