Species Details

Trifolium trichocalyx

Monterey clover

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Scientific Name:
Trifolium trichocalyx Heller
Common Name:
Monterey clover
Family: Fabaceae
Element Code: PDFAB402J0
USDA Plants Symbol: TRTR
Synonyms/Other Names:
Lifeform: annual herb
Blooming Period: Apr-Jun
Elevation:
30 - 305 meters
100 - 1000 feet
General Habitat:
  • Closed-cone coniferous forest (burned areas, openings, sandy)
General Micro Habitat:
Micro Habitat:
Notes:
Discovered in Big River Forest (TCF), MEN Co. by K. Heise and G. Hulse-Stephens in 2011. Previously known from only two occurrences from the central portion of the Monterey Peninsula; where fewer than 1000 plants seen in 1987, none in 1992, and only 22 in 1995. Seriously threatened by urbanization and altered fire regimes. Appears to be a fire follower. Possibly of hybrid origin. See Muhlenbergia 1:55 (1904) for original description and MadroƱo 59(3):167 (2012) for discovery of MEN Co. occurrence.
Threats:
Taxonomy:
Other:
Total Occurrences: 6
Element Occurrence Ranks:
A B C D X U
0 4 1 0 0 1
Occurrence Status:
Historical >20 Years 1
Recent <=20 Years 5
Presence:
Presumed Extant 6
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Mendocino (MEN), Monterey (MNT)
Quads: Name (Quad Code)
Eureka Hill (3812385), Mathison Peak (3912336), Monterey (3612158), Point Arena (3812386)
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