Taxon Report
Calystegia collina (E.Greene) Brummitt ssp. tridactylosa (Eastw.) Brummittthree-fingered morning-glory |
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Classification
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Scientific Name: |
Calystegia collina (E.Greene) Brummitt ssp. tridactylosa (Eastw.) Brummitt |
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Common Name: |
three-fingered morning-glory |
| Family: | Convolvulaceae |
| Element Code: | PDCON04036 |
| USDA Plants Symbol: | CACOT |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb |
| Blooming Period: Apr-Jun | Apr-Jun |
| Elevation: | 0-600 (0-1970) |
| General Habitats: | Chaparral, Cismontane woodland |
| Microhabitat: | Gravelly, Openings, Rocky, Serpentine |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G4T1 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 11 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 0 |
| Fair (C) | 1 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 8 |
| California Endemic: True | |
| 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) | |
Threat List Data from the CNDDB
| Threat List Total: | 2 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 2 | 18 % | |
| Development | 2 | 18% |
| Road/trail construction/maint. | 1 | 9% |
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. |
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Threats: |
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Taxonomy: |
Selected References
| Proposed Addition to CRPR 1B.2, G4T1 / S1.2 (2006) |
Citation
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].