Species Details

Chorizanthe orcuttiana

Orcutt's spineflower

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Classification

Scientific Name: Chorizanthe orcuttiana Parry
Common Name: Orcutt's spineflower
Family:	Polygonaceae
Element Code:	PDPGN040G0
USDA Plants Symbol:	CHOR
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	FE (1996-10-07)
State List:	CE (1979-11-01)
Global Rank:	G1
State Rank:	S1
Other Status:	SB_CalBG/RSABG
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2021-11-05

Ecology and Life History

Lifeform: annual herb

Blooming Period: Mar-May

Elevation:
3 - 125 meters
10 - 410 feet

General Habitats:

Closed-cone coniferous forest
Chaparral (maritime)
Coastal scrub

Microhabitat Details:

Microhabitat:

Openings
Sandy

Notes

Notes: Most historical habitat urbanized. Threatened by foot traffic and non-native plants. See Phytologia 66(2):183 (1989) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	7
	Total EOs	% of EOs
EOs with Threat Listed:	12	67 %
Non-native plant impacts	8	44%
Foot traffic/trampling	6	33%
Road/trail construction/maint.	4	22%
Development	3	16%
Erosion/runoff	2	11%
Improper burning regime	1	5%
Recreational use (non-ORV)	1	5%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					18
A	B	C	D	X	U
2	4	0	1	5	6

Occurrence Status:
Historical >20 Years	8
Recent <=20 Years	10

Presence:
Presumed Extant	13
Possibly Extirpated	5
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
San Diego (SDG)

Quads: Name (Quad Code)
Del Mar (3211782), Encinitas (3311713), La Jolla (3211772)*, Point Loma (3211762), Rancho Santa Fe (3311712)*

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