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Layia 
Summary
Layia is a genus of flowering plants in the family Asteraceae known generally as tidy tips, native to western North America. Several are California endemics.[4][5]
| Layia | |
|---|---|
| |
| Layia glandulosa | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Madieae |
| Subtribe: | Madiinae |
| Genus: | Layia Hook. & Arn. ex DC. 1838, conserved name, not Hook. & Arn. 183 (syn of Ormosia in Fabaceae)[1][2] |
| Synonyms[3] | |
| |
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]
- Layia calliglossa - CA
- Layia carnosa - beach tidytips - CA
- Layia chrysanthemoides - smooth tidytips - CA
- Layia discoidea - rayless tidytips - CA
- Layia douglasii - OR WA
- Layia elegans - CA
- Layia erubescens - CA[8]
- Layia fremontii - Frémont's tidytips - CA
- Layia gaillardioides - woodland tidytips - CA
- Layia glandulosa - white daisy tidytips - CA AZ NM NV UT ID OR WA, Baja California[9]
- Layia heterotricha - pale yellow tidytips - CA
- Layia hieracioides - tall tidytips - CA
- Layia hispida - CA
- Layia jonesii - Jones' tidytips - CA
- Layia leucopappa - Comanche Point tidytips - CA
- Layia munzii - Munz' tidytips - CA
- Layia nemorosa - CA
- Layia pentachaeta - Sierra tidytips - CA
- Layia platyglossa - common tidytips - CA AZ UT
- Layia septentrionalis - Colusa tidytips - CA
References edit
- ^ Tropicos search for Layia
- ^ The Plant List, Ormosia emarginata (Hook. & Arn.) Benth.
- ^ a b Flann, C (ed) 2009+ Global Compositae Checklist
- ^ Candolle, Augustin Pyramus de. 1838. Prodromus Systematis Naturalis Regni Vegetabilis 7(1): 294 in Latin
- ^ Tropicos, Layia Hook. & Arn. ex DC.
- ^ Flora of North America Vol. 21 Page 262 Layia Hooker & Arnott ex de Candolle in A. P. de Candolle and A. L. P. P. de Candolle
- ^ Biota of North America Program 2013 county distribution maps
- ^ Baldwin, B. G. A new species of Layia (Compositae) from the Central Coast of California. Madroño 69(1), 88-94. 21 April 2022.
- ^ Wildflowers of the Southwestern Deserts
External links edit
- CalFlora Database: Layia — with species images and links.
- Jepson Manual Treatment — Layia
- USDA Plants Profile: Layia
Media related to Layia at Wikimedia Commons
