Syntrichopappus
| Syntrichopappus | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Tribe: | Madieae |
| Subtribe: | Baeriinae[1] |
| Genus: | Syntrichopappus A. Gray |
| Type species | |
| Syntrichopappus fremontii A. Gray | |
| Species | |
|
2, see text | |
Syntrichopappus is a genus of flowering plants in the daisy or sunflower 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.[2] There are two species.[3] Common names include xerasid[3] and Fremont's gold.
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).[3][4] The common name "xerasid" derives from Greek, meaning "son of dryness".[3]
Leaves
Leaves are simple, alternate, sometimes with the lowest ones opposite.[4]
Inflorescense
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 Fremont'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 Fremont'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
- ↑ Ekenäs, Catarina (2008). Phylogenies and secondary chemistry in Arnica (Asteraceae). Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 392. Uppsala, Sweden: University of Uppsala. p. 16. ISBN 978-91-554-7092-0.
- ↑ "Genus Syntrichopappus". Universal Protein Resource (UniProt).
- ↑ 3.0 3.1 3.2 3.3 California Desert Wildflowers, An Introduction to Families, Genera, and Species; Sia Morhardt, Emil Morhardt; p 74-5
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 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