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Syntrichopappus
Genus of flowering plants From Wikipedia, the free encyclopedia
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Syntrichopappus is a genus of flowering plants in the family Asteraceae, found in the southwestern United States and northern Mexico, including Baja California. It is a member of the Heliantheae alliance of the Asteraceae family.[1] There are two species.[2] Common names include xerasid[2] and Frémont's gold.[3]
The name "Syntrichopappus" derives from a Greek name: "syn" = "joined together", "tricho" = "hair", of the "pappus", which means many bristles fused at the base (however some species have no pappus).[2][4][clarification needed] The common name "xerasid" derives from Greek, meaning "son of dryness".[2]
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Description
Leaves
Leaves are simple, alternate, sometimes with the lowest ones opposite.[4]
Inflorescence
Flower heads are solitary.[4] There is one yellow (or white with red veins) ray flower per phyllary, with 3-lobed ligules.[4] The yellow disk flowers are narrowly funnel shaped.[4]
Fruits
The fruits have 0 to many pappus bristles, fused at the base.[4]
Species
- Syntrichopappus fremontii (yellowray Frémont's gold) is native to desert regions of the American southwest and adjacent Baja California. It is a small woolly herb just a few centimeters tall bearing flower heads with usually five toothed yellow ray florets.[5][6]
- Syntrichopappus lemmonii (pinkray Frémont's gold) is endemic to California, where it can be found in the southern coastal mountain ranges, including the Transverse Ranges. Its flower heads contain white, red-veined ray florets with pink undersides.[7][8]
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References
External links
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