Taxon Report

Ribes hudsonianum Richards. var. petiolare (Dougl.) Jancz.

western black currant

Print Report

Taxon Summary

Ribes hudsonianum var. petiolare, commonly known as western black currant, is a perennial deciduous shrub in the Grossulariaceae that is found in California and elsewhere. It occurs within Riparian scrub, growing at elevations from 1500 to 2230 meters. Ribes hudsonianum var. petiolare is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Ribes hudsonianum Richards. var. petiolare (Dougl.) Jancz.
Common Name:	western black currant
Family:	Grossulariaceae
Element Code:	PDGRO020N2
USDA Plants Symbol:	RIHUP
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial deciduous shrub
Blooming Period: May-Jul	May-Jul
Elevation:	1500-2230 (4920-7315)
General Habitats:	Riparian scrub
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.3
Global Rank:	G5T5
State Rank:	S2
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.3 to 2B.3 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	6
Element Occurrence Ranks:
Excellent (A)	2
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	4

Location


California Endemic: False
California Counties and Islands: Name (Code)
Lassen (LAS), Modoc (MOD), Siskiyou (SIS)
Quads: Name (Quad Code)
Dorris Reservoir (4112044), Emerson Peak (4112022), Jess Valley (4112023), Secret Spring Mtn. (4112282), Shields Creek (4112043), Snake Lake (4112021)

Threat List Data from the CNDDB


Threat List Total:	2
EOs with Threat Listed:	Total EOs	% of EOs
	2	33 %
Recreational use (non-ORV)	2	33%
Road/trail construction/maint.	2	33%

Notes




Threats:

Taxonomy:

Selected References

Ribes hudsonianum var. petiolare profile for potential Species of Conservation Concern evaluation (2017)

Ribes hudsonianum var. petiolare profile for potential Species of Conservation Concern evaluation (2017)

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 18 December 2025].