Critically Imperiled (NatureServe)
Lasthenia burkei is a rare species of flowering plant in the daisy family known by the common names Burke's goldfields and Burke's baeria.
Critically endangered plant
There are probably fewer than ten occurrences in Lake, Mendocino, and Sonoma Counties. It is threatened by the destruction and degradation of its rare wetland habitat, and it may be extinct by 2025.
Lasthenia burkei is an erect annual herb producing hairy stems with sparse linear or deeply divided, narrow, pointed leaves a few centimeters long.
Atop the stem is an inflorescence, which is a flower head with a base of hairy phyllaries. The head contains many yellow disc florets surrounded by a fringe of several short ray florets, which are usually also yellow.
The fruit is a hairy, club-shaped achene less than 2 millimeters long.
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