Difference between revisions of "Psathyrotes annua"
Smithsonian Contr. Knowl. 5(6): 100. 1853.
IllustratedEndemic
Basionym: Bulbostylis annua Nuttall Proc. Acad. Nat. Sci. Philadelphia 4: 22. 1848
Treatment appears in FNA Volume 21. Treatment on page 417.
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|publication year=1853 | |publication year=1853 | ||
|special status=Illustrated;Endemic | |special status=Illustrated;Endemic | ||
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Gaillardiinae | ||
Latest revision as of 20:07, 5 November 2020
Annuals (rarely persisting), 4–15 cm; glandular-pubescent, weakly tomentose, furfuraceous. Stems erect and spreading, much branched. Leaf blades rounded-deltate to reniform, 4–18 × 6–26 mm, margins of some or all toothed. Peduncles 1–28 mm. Involucres turbinate, 6–9 mm. Phyllaries 13–19, outer falling or persistent, 5–6, lanceolate to lance-linear, tips erect, inner falling, 8–13, lance-linear, tips erect. Florets 10–21; corollas yellow, often purplish at tips, 4–5 mm. Cypselae 2–3 mm; pappi of 35–50, subequal bristles in 1 series, 1–4 mm. 2n = 34.
Phenology: Flowering spring–fall.
Habitat: Alkaline soils of washes and playas
Elevation: 800–2000 m
Distribution
Ariz., Calif., Idaho, Nev., Utah.
Discussion
Selected References
None.
Lower Taxa
None.