CNPS Inventory Plant Detail

Trifolium trichocalyx

Common Name:	Monterey clover
Family:	Fabaceae
Synonyms:
Element Code:	PDFAB402J0
Full Name:	Trifolium trichocalyx Heller
USDA PLANTS Symbol:	TRTR

Biology
Lifeform: annual herb Blooming Period: April - June Habitat: • Closed-cone coniferous forest (sandy, openings, burned areas)

Rarity Status
CA Rare Plant Rank: 1B.1 Rare, threatened, or endangered in California and elsewhere .1: Seriously endangered in California Federal Listing Status: FE Endangered (08/12/98) State Listing Status: CE Endangered (11/79) State Rank: S1 S1: Critically Imperiled. Global Rank: G1 G1: Critically Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Historic >20 yrs	Recent <=20 yrs
1	2

Presence:

Present Extant	Possibly Extirpated	Extirpated
3	0	0

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 Madroño 59(3):167 (2012) for discovery of MEN Co. occurrence.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 1974-01-01
Last Update: 2013-01-10

Location

Elevation: 30 - 240 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Mendocino (MEN), Monterey (MNT)

Quads: name (DWR code) USGS code
Monterey (366C) 36121E8, Mathison Peak (568C) 39123C6

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

1533

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 .

-121.875,36.5