Psathyrotes ramosissima

(Torrey) A. Gray

Proc. Amer. Acad. Arts 7: 363. 1868

Common names: Turtleback
Basionyms: Tetradymia ramosissima Torrey in W. H. Emory, Not. Milit. Reconn., 145. 1848
Treatment appears in FNA Volume 21. Treatment on page 417.

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. Phyllaries 15–24, outer persistent, 5–6, apically spatulate, tips reflexed to squarrose, inner falling, 10–18, apically lanceolate, tips erect. Florets 16–32; corollas pale yellow, 4.5–5 mm. Cypselae 1.5–3.5 mm; pappi of 120–140 subequal bristles in 2–4 series, 3–4 mm. 2n = 34.


Phenology: Flowering mostly in spring, otherwise sporadically, following rains.
Habitat: Sandy soils and desert pavements
Elevation: -30–900 m

Distribution

V21-1043-distribution-map.gif

Ariz., Calif., Nev., Mexico (Baja California, Sonora).

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Psathyrotes ramosissima"
John L. Strother +
(Torrey) A. Gray +
Tetradymia ramosissima +
Turtleback +
Ariz. +, Calif. +, Nev. +, Mexico (Baja California +  and Sonora). +
-30–900 m +
Sandy soils and desert pavements +
Flowering mostly in spring, otherwise sporadically, following rains. +
Proc. Amer. Acad. Arts +
Compositae +
Psathyrotes ramosissima +
Psathyrotes +
species +