Difference between revisions of "Perityle sect. Pappothrix"
Sida 3: 277. 1968.
Basionym: Laphamia sect. Pappothrix A. Gray Smithsonian Contr. Knowl. 3(5): 99. 1852
Synonyms: Undefined sect. Pappothrix (A. Gray) Rydberg
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| − | |hierarchy=Asteraceae | + | |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Peritylinae;Perityle;Perityle sect. Pappothrix |
| − | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae | + | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Heliantheae]]</div><div class="higher-taxon"><small>subtribe</small>[[Asteraceae (tribe Heliantheae) subtribe Peritylinae]]</div><div class="higher-taxon"><small>genus</small>[[Perityle]]</div><div class="higher-taxon"><small>section</small>[[Perityle sect. Pappothrix]]</div></div> |
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Peritylinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Peritylinae | ||
Latest revision as of 20:14, 5 November 2020
Perennials or subshrubs (usually in rock crevices, stems often brittle). Involucres cylindric, narrowly funnelform, or campanulate, 6–12 × 3–15 mm. Ray florets 0. Disc florets 5–150; corollas cream, yellow, or white. Cypselae oblong to narrowly oblanceolate, partially flattened to subcylindric, usually somewhat rounded or angled on 1 or both faces, margins inconspicuously calloused, almost glabrous or short-hairy; pappi of 8–35 unequal, antrorsely barbellulate bristles 0.5–3.5 mm (in P. vitreomontana all but 2–3 may be reduced to vestigial nubs). x = 17.
Distribution
sw United States.
Discussion
Species 6 (6 in the flora).
Selected References
Lower Taxa
Key
| 1 | Disc florets 20–150; corollas yellow; New Mexico | Perityle cernua |
| 1 | Disc florets 5–16; corollas cream, yellow, or white; New Mexico, Texas | > 2 |
| 2 | Disc florets 5–6(–8); phyllaries 5–6; plants usually glabrate or puberulent, sometimes hirtellous; New Mexico, Texas | Perityle quinqueflora |
| 2 | Disc florets 8–16; phyllaries 8–16; plants hirsute, pilose, puberulent, or tomentose-canescent; Texas | > 3 |
| 3 | Leaf blades deltate to ovate overall, 3-lobed | Perityle fosteri |
| 3 | Leaf blades ovate, ovate-deltate, subcordate, subdeltate, subovate, or subreniform (not 3-lobed, margins usually toothed) | > 4 |
| 4 | Corollas yellow or white; pappi of (16–)20–30 bristles; plants hirsute, pilose, or puberulent | Perityle rupestris |
| 4 | Corollas white; pappi of 2–20 bristles; plants pilose or tomentose-canescent | > 5 |
| 5 | Plants pilose; pappi of 2–6 bristles plus vestigial nubs between bristles, or of 10–20 bristles | Perityle vitreomontana |
| 5 | Plants densely tomentose-canescent; pappi of (10–)14–20 bristles | Perityle cinerea |