Home/Species/ Pale-yellow Layia

Layia heterotricha

(DC.) Hook. & Arn.

Pale-yellow Layia

G2Imperiled Found in 10 roadless areas NatureServe Explorer →

G2ImperiledGlobal Rank

HighThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.142011

Element CodePDAST5N070

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderAsterales

FamilyAsteraceae

GenusLayia

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 Date2016-08-09

Change Date2010-09-20

Edition Date2005-11-16

Edition AuthorsD. Gries, rev. R. Bittman 2005, rev. G. Davis (2012)

Threat ImpactHigh

Range Extent5000-20,000 square km (about 2000-8000 square miles)

Number of Occurrences21 - 80

Rank Reasons

CNDDB indicates there are 30 recently verified EO's for Layia heterotricha with several thousand individuals in total. The range covers several counties but some occurrences are possibly extirpated. Threats include development and overgrazing in the plant's grassland habitat. There are no protected sites.

Range Extent Comments

Fresno, King (extirpated), Kern (extirpated), Monterey, Santa Barbara, San Benito, San Luis Obispo (extirpated), Ventura Counties, California. The estimated range extent covers about 100 mi by 168 mi or 168,000 sq mi.

Occurrences Comments

70 known EO's, but 40 of these are historic since many EO's are based on specimens.

Threat Impact Comments

Threats listed include development, road building and maintenance, grazing, erosion, and weeds.

Ecology & Habitat

Habitat

Cismontane woodland, pinyon and juniper woodland, valley and foothill grassland/alkaline and clay.

Terrestrial Habitats

Forest/WoodlandWoodland - ConiferGrassland/herbaceous

Other Nations (1)

United StatesN2

Province	Rank	Native
California	S2	Yes

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (10)

California (10)

Area	Forest	Acres
Antimony	Los Padres National Forest	40,911
Cuyama	Los Padres National Forest	19,631
Fox Mountain	Los Padres National Forest	52,072
Little Pine	Los Padres National Forest	1,315
Lpoor Canyon	Los Padres National Forest	13,762
Matilija	Los Padres National Forest	5,218
Mono	Los Padres National Forest	28,141
Santa Cruz	Los Padres National Forest	21,182
Sawmill - Badlands	Los Padres National Forest	51,362
Sespe - Frazier	Los Padres National Forest	106,910

References (2)

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.
Skinner, M.W., and B.M. Pavlik, eds. 1997 (1994). Inventory of rare and endangered vascular plants of California. 1997 Electronic Inventory Update of 1994 5th edition, California Native Plant Society, Special Publication No. 1, Sacramento.