Species Details

Hosackia yollabolliensis

Yolla Bolly Mtns. bird's-foot trefoil

Download Report Calflora eFlora CCH CalPhotos

2013 Shasta-Trinity National Forest

Classification

Scientific Name: Hosackia yollabolliensis (Munz) D.D. Sokoloff
Common Name: Yolla Bolly Mtns. bird's-foot trefoil
Family:	Fabaceae
Element Code:	PDFAB2A1F0
USDA Plants Symbol:
Synonyms/Other Names: Lotus yollabolliensis

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	SB_CalBG/RSABG
CRPR Changes: changed from 4.3 to 1B.2 on 2013-08-21
Add Date:	1974-01-01
Date Edited:	2024-01-02

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jun-Aug

Elevation:
1645 - 2135 meters
5395 - 7005 feet

General Habitats:

Meadows and seeps
Upper montane coniferous forest (openings)

Microhabitat Details: dry barren exposed slopes

Microhabitat:

Dry
Gravelly (often)
Slopes

Notes

Notes: Previously CRPR 4.3; rarer than originally thought.
Threats: Threatened by vehicles, conifer encrouchment, and non-native plants. Potentially threatened by climate shifts. Possibly threatened by trampling and grazing.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	2
	Total EOs	% of EOs
EOs with Threat Listed:	2	18 %
Other	2	18%
ORV activity	1	9%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					11
A	B	C	D	X	U
0	0	0	0	0	11

Occurrence Status:
Historical >20 Years	6
Recent <=20 Years	5

Presence:
Presumed Extant	11
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Humboldt (HUM), Trinity (TRI)

Quads: Name (Quad Code)
Black Rock Mtn. (4012321), Blake Mountain (4012355), Dinsmore (4012345), Forest Glen (4012333), Hyampom (4012354), North Yolla Bolly (4012228), Sims Mountain (4012365), Sportshaven (4012344)

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.

Regional Map

Map

Presumed Extant

Click on quad for name. Hold Shift Key to use mouse scroll wheel

Selected References

CNPS Status Review:	Proposed Change from California Rare Plant Rank 4.3, G3 / S3.3 to 1B.2, G2 / S2
Original Description:	Aliso 3:117 (1955)
Revised Nomenclature:	Kew Bulletin 55(4):1010 (2000)
Species Account:	Hosackia yollabolliensis profile for potential Species of Conservation Concern evaluation (2022)
Other:	USFS Potential Species of Conservation Concern Profile