| Syntrichopappus | |
|---|---|
Scientific classification
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Madieae |
| Subtribe: | Baeriinae |
| Genus: |
Syntrichopappus A.Gray |
| Type species | |
| Syntrichopappus fremontii A.Gray
| |
| Species | |
|
2, see text | |
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. [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]
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]
References
- ^ "Genus Syntrichopappus". Universal Protein Resource (UniProt).
- ^ a b c d California Desert Wildflowers, An Introduction to Families, Genera, and Species; Sia Morhardt, Emil Morhardt; p 74-5
- ^ USDA, NRCS (n.d.). "Syntrichopappus". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 7 December 2015.
- ^ a b c d e f Jepson Desert Manual: Syntrichopappus, Dale E. Johnson, 2002 Ed., p 184
- ^ Jepson Manual Treatment: S. fremontii
- ^ Flora of North America: S. fremontii
- ^ Jepson Manual Treatment: S. lemmonii
- ^ Flora of North America: S. lemmonii
External links
- Jepson Manual Treatment
- USDA Plants Profile
- Flora of North America
- Photo gallery: S. fremontii
- Photo gallery: S. lemmonii
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