| 词条 | Helianthus praetermissus |
| 释义 |
|name = Lost sunflower |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |genus = Helianthus |species = H. praetermissus |binomial = Helianthus praetermissus |binomial_authority =E.Watson }}Helianthus praetermissus is a rare and probably extinct North American species of sunflower, with the common names New Mexico sunflower[1] and lost sunflower. It is known from only one specimen collected in 1851 in Cibola County in western New Mexico, and not seen since.[2][3]Helianthus praetermissus is (was?) an annual herb with a slender, unbranching stem 90 cm (3 feet) tall. It has (had) a single flower head with yellow ray florets surrounding red disc florets.[3] References1. ^{{PLANTS|id=HEPR5|taxon=Helianthus praetermissus|accessdate=6 July 2015}} {{Taxonbar|from=Q15485664}}{{Heliantheae-stub}}2. ^Biota of North America Program 2014 county distribution map 3. ^1 New Mexico Rare Plants, University of New Mexico, Helianthus praetermissus (Lost sunflower) includes description, ecological and historical information, and photo of the only known speciimen 4 : Helianthus|Flora of New Mexico|Plants described in 1929|Extinct flora of North America |
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