Difference between revisions of "Psathyrotes ramosissima"
Proc. Amer. Acad. Arts 7: 363. 1868.
Common names: Turtleback
Basionym: Tetradymia ramosissima Torrey in W. H. Emory, Not. Milit. Reconn., 145. 1848
Treatment appears in FNA Volume 21. Treatment on page 417.
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|name=Tetradymia ramosissima | |name=Tetradymia ramosissima | ||
|authority=Torrey | |authority=Torrey | ||
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|publication_title=in W. H. Emory, Not. Milit. Reconn., | |publication_title=in W. H. Emory, Not. Milit. Reconn., | ||
|publication_place=145. 1848 | |publication_place=145. 1848 | ||
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name=Psathyrotes ramosissima | name=Psathyrotes ramosissima | ||
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|authority=(Torrey) A. Gray | |authority=(Torrey) A. Gray | ||
|rank=species | |rank=species | ||
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|publication year=1868 | |publication year=1868 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V21_1043.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae | ||
Revision as of 19:32, 16 December 2019
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
Ariz., Calif., Nev., Mexico (Baja California, Sonora).
Discussion
Selected References
None.
Lower Taxa
None.