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This article is about the genus of tidy tips. For the defunct legume genus, see Ormosia.
tidy tips
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Madieae[1]
Genus: Layia
Hook. & Arn. ex DC. 1838, conserved name, not Hook. & Arn. 183 (syn of Ormosia in Fabaceae)[2][3]

Layia is a genus of flowering plants in the daisy family known generally as tidy tips, native to western North America. Several are California endemics.[4][5]

These are erect daisylike annual herbs with dark glandular stems. The flower heads 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, who was one of the discoverers of Layia gaillardioides.[6]

  1. Layia calliglossa - CA
  2. Layia carnosa - beach tidytips - CA
  3. Layia chrysanthemoides - smooth tidytips - CA
  4. Layia discoidea - rayless tidytips - CA
  5. Layia douglasii - OR WA
  6. Layia elegans - CA
  7. Layia fremontii - Frémont's tidytips - CA
  8. Layia gaillardioides - woodland tidytips - CA
  9. Layia glandulosa - white daisy tidytips - CA AZ NM NV UT ID OR WA , Baja California[8]
  10. Layia heterotricha - pale yellow tidytips - CA
  11. Layia hieracioides - tall tidytips - CA
  12. Layia hispida - CA
  13. Layia jonesii - Jones' tidytips - CA
  14. Layia leucopappa - Comanche Point tidytips - CA
  15. Layia munzii - Munz' tidytips - CA
  16. Layia nemorosa - CA
  17. Layia pentachaeta - Sierra tidytips - CA
  18. Layia platyglossa - common tidytips - CA AZ UT
  19. Layia septentrionalis - Colusa tidytips - CA


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