Species Details

Trifolium amoenum

two-fork clover

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Fed List: FE (1997-10-22)
State List: None
Global Rank: G1
State Rank:
S1
CA Rare Plant Rank: 1B.1
Other Status: SB_CalBG/RSABG; SB_UCBG; SB_USDA
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2021-05-26
Lifeform: annual herb
Blooming Period: Apr-Jun
Elevation:
5 - 415 meters
15 - 1360 feet
General Habitat:
  • Coastal bluff scrub
  • Valley and foothill grassland (sometimes serpentinite)
General Micro Habitat:
Micro Habitat:
Notes:
Rediscovered in 1993 by P. Conners near Occidental; only one plant found, and subsequent surveys in 1994-1995 unsuccessful. Another occurrence (502C) discovered in 1996. Historical habitat lost to urbanization and agriculture. See Flora Franciscana, p. 27 (1891) by E. Greene for original description, and Fremontia 22(2):3-7 (1994) for account of rediscovery.
Threats:
Taxonomy:
Other:
References:
Total Occurrences: 26
Element Occurrence Ranks:
A B C D X U
0 2 0 0 5 19
Occurrence Status:
Historical >20 Years 24
Recent <=20 Years 2
Presence:
Presumed Extant 21
Possibly Extirpated 4
Presumed Extirpated 1
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Marin (MRN), Napa (NAP)*, San Mateo (SMT), Solano (SOL)*, Sonoma (SON)(?)
Quads: Name (Quad Code)
Bolinas (3712286)*, Camp Meeker (3812248)*, Cordelia (3812222), Cotati (3812236)*, Cuttings Wharf (3812223)*, Drakes Bay (3812218)*, Duncans Mills (3812341)(?), Elmira (3812138)*, Fairfield North (3812231), Inverness (3812217)*, Kenwood (3812245)*, Napa (3812233)*, Palo Alto (3712242), Petaluma (3812226)*, San Francisco South (3712264), San Quentin (3712284)*, San Rafael (3712285), Santa Rosa (3812246)*, Sebastopol (3812247)*, Two Rock (3812237), Valley Ford (3812238)
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