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Chorizanthe douglasii

Benth.

Douglas Spineflower

G4Apparently Secure Found in 3 roadless areas NatureServe Explorer →

G4Apparently SecureGlobal Rank

LowThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.142249

Element CodePDPGN040A0

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderPolygonales

FamilyPolygonaceae

GenusChorizanthe

Concept Reference

Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

Conservation Status

Rank MethodLegacy Rank calculation - Excel v3.1x

Review Date2014-10-08

Change Date2014-10-08

Edition Date2014-10-08

Edition AuthorsOliver, L., rev. R. Bittman (2014)

Threat ImpactLow

Range Extent20,000-200,000 square km (about 8000-80,000 square miles)

Number of Occurrences81 - 300

Rank Reasons

Chorizanthe douglasii is endemic to California and known from Monterey, San Benito, and San Luis Obispo counties (CNPS 2001). While it is considered rare by the California Native Plant Society, they consider is distributed widely enough and occurring in sufficient numbers that currently the potential for extinction is low (CNPS 2001). C. douglasii is found in chaparral, cismontane woodland, coastal scrub and lower montane coniferous forest on sandy or gravelly soils (CNPS 2001). Invasive plant species may pose a threat.

Range Extent Comments

Endemic to the inner and outer South Coast Ranges of California and known from Monterey, San Benito, and San Luis Obispo counties (CNPS 2001).

Occurrences Comments

There are 145 unprocessed sources in CNDDB (2014), and 268 Consortium of California Herbaria records (2014).

Threat Impact Comments

Weeds may be a threat (CNDDB 2014).

Ecology & Habitat

Other Nations (1)

United StatesN4

Province	Rank	Native
California	S4	Yes

Threat Assessments

Threat	Scope	Severity	Timing
8 - Invasive & other problematic species, genes & diseases	—	—	—
8.1 - Invasive non-native/alien species/diseases	—	—	—
8.2 - Problematic native species/diseases	—	—	—

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (3)

California (3)

Area	Forest	Acres
Bear Mountain	Los Padres National Forest	913
Black Butte	Los Padres National Forest	5,116
Black Mountain	Los Padres National Forest	16,818

References (4)

California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.
California Natural Diversity Database (CNDDB). 2014. RareFind Version 5. California Department of Fish and Game, Sacramento.
Flora of North America Editorial Committee (FNA). 2005. Flora of North America north of Mexico. Vol. 5. Magnoliophyta: Caryophyllidae: Caryophyllales, Polygonales, and Plumbaginales. Oxford Univ. Press, New York. vii + 656 pp.
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

Chorizanthe douglasii

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