Species Details

Chorizanthe xanti var. leucotheca

white-bracted spineflower

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Classification

Scientific Name: Chorizanthe xanti Wats. var. leucotheca Goodm.
Common Name: white-bracted spineflower
Family:	Polygonaceae
Element Code:	PDPGN040Z1
USDA Plants Symbol:	CHXAL
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G4T3
State Rank:	S3
Other Status:	BLM_S; SB_CalBG/RSABG; SB_USDA; USFS_S
CRPR Changes:
Add Date:	1994-01-01
Date Edited:	2021-11-05

Ecology and Life History

Lifeform: annual herb

Blooming Period: Apr-Jun

Elevation:
300 - 1200 meters
985 - 3935 feet

General Habitats:

Coastal scrub (alluvial fans)
Mojavean desert scrub
Pinyon and juniper woodland

Microhabitat Details:

Microhabitat:

Gravelly (sometimes)
Sandy (sometimes)

Notes

Notes: Threatened by development, flood control projects, mining, and vehicles. See Annals of the Missouri Botanical Garden 21:60 (1934) for original description, and Phytologia 66(2):160-163 (1989) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	5
	Total EOs	% of EOs
EOs with Threat Listed:	11	19 %
Development	10	16%
Non-native plant impacts	10	16%
Grazing	8	13%
ORV activity	1	1%
Road/trail construction/maint.	1	1%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					59
A	B	C	D	X	U
10	3	0	0	0	46

Occurrence Status:
Historical >20 Years	18
Recent <=20 Years	41

Presence:
Presumed Extant	59
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Riverside (RIV), San Bernardino (SBD), San Diego (SDG)

Quads: Name (Quad Code)
Anza (3311656), Blackburn Canyon (3311667), Bucksnort Mtn. (3311645), Cabazon (3311687), Cahuilla Mtn. (3311657), Cajon (3411734)?, Catclaw Flat (3411616), Desert Hot Springs (3311685), Devore (3411724), Idyllwild (3311666), Lake Arrowhead (3411732), Morongo Valley (3411615), Old Woman Springs (3411646), Onyx Peak (3411626), Palm Springs (3311675), Palm View Peak (3311665), Telegraph Peak (3411735), Toro Peak (3311654), White Water (3311686), Yucaipa (3411711)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

CNPS Rare Plant Inventory