Taxon Details

Ribes thacherianum

Santa Cruz Island gooseberry

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Taxon Summary:

Ribes thacherianum, commonly known as Santa Cruz Island gooseberry, is a perennial deciduous shrub in the Grossulariaceae that is found only in California. It occurs within Cismontane woodland, Closed-cone coniferous forest, and Riparian woodland, growing at elevations from 10 to 455 meters. Ribes thacherianum is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Ribes thacherianum (Jeps.) Munz
Common Name: Santa Cruz Island gooseberry
Family:	Grossulariaceae
Element Code:	PDGRO02109
USDA Plants Symbol:	RITH
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	SB_USDA
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: perennial deciduous shrub

Blooming Period: Feb-Jun

Elevation:
10 - 455 meters
35 - 1495 feet

General Habitats:

Closed-cone coniferous forest
Cismontane woodland
Riparian woodland

Microhabitat Details:

Microhabitat:

Notes

Notes: Blooms intermittently throughout most of year. Possibly threatened by feral herbivores.
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:					12
A	B	C	D	X	U
0	0	0	0	0	12

Occurrence Status:
Historical >20 Years	11
Recent <=20 Years	1

Presence:
Presumed Extant	12
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Santa Barbara (SBA)

Quads: Name (Quad Code)
Santa Cruz Island B (3311986), Santa Cruz Island C (3311985)

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