| 词条 | Pentachaeta aurea |
| 释义 |
|image = Pentachaeta aurea ssp aurea.jpg |image_caption = ssp. aurea |status = G4 |status_system = TNC |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |genus = Pentachaeta |species = P. aurea |binomial = Pentachaeta aurea |binomial_authority = Nutt. |synonyms = Chaetopappa aurea }} Pentachaeta aurea is a species of flowering plant in the aster family known by the common names golden-rayed pentachaeta,[1] golden chaetopappa,[2] and golden leastdaisy.[3] It is native to southern California, where it grows in the San Gabriel and San Bernardino Mountains and the Peninsular Ranges, and northern Baja California. It is an annual herb with a hairy stem reaching a maximum height near 36 centimeters from a slender taproot. The narrow linear leaves are up to 5 centimeters long but only a few millimeters wide and may be very hairy. The inflorescence is a solitary flower head, with up to 22 heads per plant. The flower head bears many yellow, brownish, or whitish ray florets 3 to 12 millimeters long, and has a center of many five-lobed yellow to reddish disc florets. The fruit is an achene tipped with a pappus of bristles. References1. ^Pentachaeta aurea. The Jepson Manual. 2. ^Pentachaeta aurea. USDA Plants Profile. 3. ^Pentachaeta aurea. NatureServe. 2012. External links
7 : Astereae|Flora of California|Flora of Baja California|Natural history of the California chaparral and woodlands|Natural history of the Peninsular Ranges|Natural history of the Transverse Ranges|Taxa named by Thomas Nuttall |
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