Layia septentrionalis
Layia septentrionalis is an uncommon species of flowering plant in the daisy family known by the common name Colusa tidytips, or Colusa layia.
| Layia septentrionalis | |
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| Species: | L. septentrionalis |
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| Layia septentrionalis | |
It is endemic to California, where it is known only from the Coast Ranges north of the San Francisco Bay Area and the Sutter Buttes in the Central Valley. It is sometimes a member of the serpentine soils flora.
Description
This is a small annual herb producing a glandular stem up to about 35 centimeters tall. The leaves are linear to lance-shaped, with the lower ones lobed and up to about 7 centimeters in length. The daisylike flower heads contain toothed yellow ray florets and yellow disc florets with yellow anthers. The fruit is an achene; fruits on the disc florets have a long white pappus of plumelike bristles.