Cirsium rhothophilum Calflora

Calflora, a 501c3 non-profit

Taxon Report

Cirsium rhothophilum S. F. Blake

Surf thistle

2011 Chris Winchell

2017 John Doyen

2011 Chris Winchell

Cirsium rhothophilum is a perennial herb that is native to California, and endemic (limited) to California.

California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).

State of California status: Threatened.


	Plant Range Observation Search (53 records) Plant Characteristics one or more occurrences within a 7.5-minute quadrangle

Bloom Period

Photos on Calflora


Genus:	Cirsium
Family:	Asteraceae
Category:	angiosperm
PLANTS group:	Dicot
Jepson eFlora section: eudicot

Habitat: dunes, coastal

Communities: Coastal Strand, Coastal Sage Scrub

Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:


PLANTS	Cirsium maritimum

Information about Cirsium rhothophilum from other sources


Nursery availability from CNPLX Commercial availability unknown. Jepson eFlora USDA PLANTS Profile (CIRH) Photos on Calflora Photos on CalPhotos Google Images Photos on iNaturalist ID Tips on PlantID.net	ITIS Original Publication citation International Plants Names Index Search efloras.org (Flora of North America) Landscape information from Calscape BONAP Distribution Map CNPS Inventory: 1B.2 Consortium of California Herbaria 2	Add an Observation Location Suitability Planting Guide Distribution by County
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Suggested Citation

Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 02/07/2023).