Psathyrotes ramosissima |
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turtleback, velvet turtleback |
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Habit | Annuals or perennials, 3–30 cm; lanate, furfuraceous. |
Stems | erect and spreading, much branched. |
Leaf | blades rounded-deltate to suborbiculate, 8–25 × 8–30 mm, margins toothed. |
Peduncles | 3–50 mm. |
Involucres | broadly turbinate to campanulate, 6–10 mm. |
Florets | 16–32; corollas pale yellow, 4.5–5 mm. |
Phyllaries | 15–24, outer persistent, 5–6, apically spatulate, tips reflexed to squarrose, inner falling, 10–18, apically lanceolate, tips erect. |
Cypselae | 1.5–3.5 mm; pappi of 120–140 subequal bristles in 2–4 series, 3–4 mm. |
2n | = 34. |
Psathyrotes ramosissima |
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Phenology | Flowering mostly in spring, otherwise sporadically, following rains. |
Habitat | Sandy soils and desert pavements |
Elevation | -30–900 m (-100–3000 ft) |
Distribution |
AZ; CA; NV; Mexico (Baja California, Sonora)
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Source | FNA vol. 21, p. 417. |
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Gaillardiinae > Psathyrotes |
Sibling taxa | |
Synonyms | Tetradymia ramosissima |
Name authority | (Torrey) A. Gray: Proc. Amer. Acad. Arts 7: 363. (1868) |
Web links |