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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. There are two species. Common names include xerasid 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). The common name "xerasid" derives from Greek, meaning "son of dryness".
The fruits have 0 to many pappus bristles, fused at the base.
- 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.
- 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.
- Ekenäs, Catarina (2008). Phylogenies and secondary chemistry in Arnica (Asteraceae) (PDF). 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).
- California Desert Wildflowers, An Introduction to Families, Genera, and Species; Sia Morhardt, Emil Morhardt; p 74-5
- "Syntrichopappus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 7 December 2015.
- 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
- Jepson Manual Treatment
- USDA Plants Profile
- Flora of North America
- Photo gallery: S. fremontii
- Photo gallery: S. lemmonii
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