Taxon Details

Horkelia congesta var. nemorosa

Josephine horkelia

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Photo of Horkelia congesta var. nemorosa

Taxon Summary:

Horkelia congesta var. nemorosa, commonly known as Josephine horkelia, is a perennial herb in the Rosaceae that is found in California and elsewhere. It occurs within North Coast coniferous forest (clay, and serpentinite seeps), growing at elevations from 300 to 800 meters. Horkelia congesta var. nemorosa is ranked 2B.1, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Horkelia congesta Hook. var. nemorosa (D.D. Keck) M. Peck
Common Name: Josephine horkelia
Family:	Rosaceae
Element Code:	PDROS0W032
USDA Plants Symbol:
Synonyms/Other Names: Horkelia congesta Hook ssp. nemorosa Keck
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.1
Fed List:	None
State List:	None
Global Rank:	G4T4?
State Rank:	S1
Other Status:
CRPR Changes:
Add Date:	1988-01-01
Date Edited:	2025-06-03

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Jul

Elevation:
300 - 800 meters
985 - 2625 feet

General Habitats:

North Coast coniferous forest (clay, serpentinite seeps)

Microhabitat Details:

Microhabitat:

Notes

Notes: Known in CA only from Shelly Creek.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					1
A	B	C	D	X	U
0	0	0	0	0	1

Occurrence Status:
Historical >20 Years	1
Recent <=20 Years	0

Presence:
Presumed Extant	1
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Oregon (OR)

California Counties and Islands: Name (Code)
Del Norte (DNT)

Quads: Name (Quad Code)
Shelly Creek Ridge (4112387)

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

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CNPS Rare Plant Inventory