CNPS Inventory Plant Detail

Horkelia hendersonii

Common Name:	Henderson's horkelia
Family:	Rosaceae
Synonyms:
Element Code:	PDROS0W090
Full Name:	Horkelia hendersonii Howell
USDA PLANTS Symbol:	HOHE2

Biology
Lifeform: perennial herb Blooming Period: June - August Habitat: • Upper montane coniferous forest (granitic)

Rarity Status
CA Rare Plant Rank: 1B.1 Rare, threatened, or endangered in California and elsewhere .1: Seriously endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed 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	0

Presence:

Present Extant	Possibly Extirpated	Extirpated
1	0	0

Notes
Known in CA from only one occurrence. Endangered in OR. To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page. Date Added: 1988-01-01 Last Update: 2010-03-15

Location

Elevation: 2000 - 2300 meters

California Endemic: no

States: California, Oregon

California Counties and Islands: name (code)
Siskiyou (SIS)

Quads: name (DWR code) USGS code
Condrey Mtn. (735B) 41122H8, McKinley Mtn. (735D) 41122G7

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

911

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 .

-122.875,41.875