Species Details

Calystegia collina ssp. tridactylosa

three-fingered morning-glory

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Scientific Name:
Calystegia collina (E.Greene) Brummitt ssp. tridactylosa (Eastw.) Brummitt
Common Name:
three-fingered morning-glory
Family: Convolvulaceae
Element Code: PDCON04036
USDA Plants Symbol: CACOT
Synonyms/Other Names:
CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G4T1
State Rank:
S1
Other Status: BLM_S
CRPR Changes:
added to 1B.2 on 2006-11-17
Add Date: 2006-11-17
Date Edited: 2021-10-04
Lifeform: perennial rhizomatous herb
Blooming Period: Apr-Jun
Elevation:
0 - 600 meters
0 - 1970 feet
General Habitat:
  • Chaparral
  • Cismontane woodland
General Micro Habitat:
Micro Habitat:
  • Gravelly
  • Openings
  • Rocky
  • Serpentinite
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.
Threats:
Taxonomy:
Other:
Total Occurrences: 11
Element Occurrence Ranks:
A B C D X U
2 0 1 0 0 8
Occurrence Status:
Historical >20 Years 3
Recent <=20 Years 8
Presence:
Presumed Extant 11
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Colusa (COL), Lake (LAK), Mendocino (MEN)
Quads: Name (Quad Code)
Brushy Mtn. (3912352), Covelo West (3912373), Dos Rios (3912363), Hull Mountain (3912258), Jamison Ridge (3912362), Leesville (3912224), Plaskett Ridge (3912268), The Geysers (3812277), Wilbur Springs (3912214)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Map

Presumed Extant
Counties   Quads