''Layia'' is a genus of flowering plants in the family

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae ...

known generally as tidy tips, native to western North America. Several are

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the ...

endemics Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

. These are erect daisylike annual herbs with dark glandular stems. The

flower heads A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...

usually contain white or yellow ray florets; some species have yellow florets tipped sharply in white which give the flowers their common name. The genus is named for naturalist

George Tradescant Lay George Tradescant Lay (c. 1800 – 6 November 1845) was a British naturalist, missionary and diplomat. Lay was a naturalist on the English sailing ship HMS ''Blossom'' under the command of Captain Frederick William Beechey from 1825 to 1828, wh ...

, who was one of the discoverers of '' Layia gaillardioides''. ; SpeciesFlann, C (ed) 2009+ Global Compositae Checklist
/ref>Biota of North America Program 2013 county distribution maps
/ref>

References

External links

CalFlora Database: ''Layia''
— ''with species images and links''.
Jepson Manual Treatment — ''Layia''

USDA Plants Profile: ''Layia''
* Asteraceae genera Flora of North America {{Asteroideae-stub