| 词条 | Layia |
| 释义 |
|image = Tidytips.jpg |image_caption = tidy tips |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |genus = Layia |genus_authority = Hook. & Arn. ex DC. 1838, conserved name, not Hook. & Arn. 183 (syn of Ormosia in Fabaceae)[1][2] |synonyms_ref=[3] |synonyms=
|tribus=Madieae[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]
}} References1. ^Tropicos search for Layia 2. ^The Plant List, Ormosia emarginata (Hook. & Arn.) Benth. 3. ^1 2 Flann, C (ed) 2009+ Global Compositae Checklist{{dead link|date=December 2017 |bot=InternetArchiveBot |fix-attempted=yes }} 4. ^[https://www.biodiversitylibrary.org/item/7156#page/299/mode/1up Candolle, Augustin Pyramus de. 1838. Prodromus Systematis Naturalis Regni Vegetabilis 7(1): 294] in Latin 5. ^Tropicos, Layia Hook. & Arn. ex DC. 6. ^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 7. ^Biota of North America Program 2013 county distribution maps 8. ^Wildflowers of the Southwestern Deserts External links
3 : Layia|Asteraceae genera|Flora of North America |
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