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Burke's Goldfields
(Lasthenia burkei)

CLASSIFICATION: Federal Endangered Species (Federal Register 56:61173; December 2, 1991)

CRITICAL HABITAT: None designated

RECOVERY PLAN: Vernal pool recovery plan (under development).

DESCRIPTION: Burke's goldfields (Lasthenia burkei) is a small, slender annual herb in the sunflower family (Asteraceae). It has narrow, opposite leaves and bright reddish golden flowers. It is extremely rare, being found in only few areas of the Laguna de Santa Rosa and the northern Santa Rosa Plains. The plant can be easily confused with other goldfields such as Contra Costa goldfields (L. conjugens) by people not trained in botany.
Flowers bloom from April until June. Both the ray and disk flowers are yellow, while the pappus (seed appendage that aids dispersal by acting like a little

DISTRIBUTION:

This vernal pool species is known only from southern portions of Lake and Mendocino Counties and from northeastern Sonoma County. Historically, 39 populations were known from the Cotati valley, 2 sites in Lake County, and one site in Mendocino County. The occurrence in Mendocino County is most likely extirpated. From north to south in the Cotati Valley, the species ranges from north of the community of Windsor to east of the city of Sebastopol.

Other endangered plants found in the Cotati Valley include Sonoma Sunshine or Baker's Stickyseed (Blennosperma Bakeri) and Sebastopol meadowfoam (Limnanthes vinculans).