Difference between revisions of "Pyrrocoma clementis"

Rydberg

Bull. Torrey Bot. Club 27: 625. 1900.

Common names: Tranquil goldenweed
Endemic
Synonyms: Haplopappus clementis (Rydberg) S. F. Blake
Treatment appears in FNA Volume 20. Treatment on page 416. Mentioned on page 414.
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|common_names=Tranquil goldenweed
 
|common_names=Tranquil goldenweed
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|basionyms=
 
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|name=Haplopappus clementis
 
|name=Haplopappus clementis
 
|authority=(Rydberg) S. F. Blake
 
|authority=(Rydberg) S. F. Blake
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|hierarchy=Asteraceae;Asteraceae tribe Astereae;Pyrrocoma;Pyrrocoma clementis
 
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|discussion=<p>Varieties 2 (2 in the flora).</p><!--
 
|discussion=<p>Varieties 2 (2 in the flora).</p><!--
 
--><p><i>Pyrrocoma clementis</i> is recognized by its villous to tomentose stems, villous and ciliate phyllaries, and high elevation habitat, often well above tree-line. It is similar to <i>P. uniflora</i>, which has narrower heads, finer floccose-tomentose pubescence, and grows at lower elevations.</p>
 
--><p><i>Pyrrocoma clementis</i> is recognized by its villous to tomentose stems, villous and ciliate phyllaries, and high elevation habitat, often well above tree-line. It is similar to <i>P. uniflora</i>, which has narrower heads, finer floccose-tomentose pubescence, and grows at lower elevations.</p>
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name=Pyrrocoma clementis
 
name=Pyrrocoma clementis
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|family=Asteraceae
 
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|distribution=Colo.;Utah;Wyo.
 
|reference=None
 
|reference=None
 
|publication title=Bull. Torrey Bot. Club
 
|publication title=Bull. Torrey Bot. Club
 
|publication year=1900
 
|publication year=1900
|special status=
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|special status=Endemic
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|tribe=Asteraceae tribe Astereae
 
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Latest revision as of 18:27, 6 November 2020

Plants 3–18(–40) cm. Stems 1–5, ascending or decumbent, pale and often red-tinged, sparsely villous, sometimes tomentose. Leaves (persistent, thick, ± fleshy); basal petiolate, blades lanceolate to narrowly oblanceolate, 50–140 × 9–16 mm, margins usually entire, sometimes slightly undulate, sometimes denticulate, sparsely ciliate, apices acute to obtuse, faces usually glabrous, sometimes puberulent or villous, eglandular; cauline sessile, lanceolate to ovate, 20–40 × 5–10 mm, bases clasping, auriculate. Heads usually borne singly, terminal, sometimes 2–3 smaller proximally, not subtended by leaflike bracts. Peduncles 0.5–1 cm. Involucres broadly campanulate, 8–15 × 20–35 mm. Phyllaries in 3–4 series, green with white margins, sometimes yellowish, lanceolate to oblanceolate, 6–12 mm, unequal, margins entire, ciliate, apices obtuse to acute or acuminate, faces villous. Ray florets 21–55; corollas 10–18 mm. Disc florets 100+; corollas 6–8 mm. Cypselae subfusiform, not compressed, 4–7 mm, 4-angled, faces striate, sericeous or glabrous; pappi tawny, 6–8 mm.

Discussion

Varieties 2 (2 in the flora).

Pyrrocoma clementis is recognized by its villous to tomentose stems, villous and ciliate phyllaries, and high elevation habitat, often well above tree-line. It is similar to P. uniflora, which has narrower heads, finer floccose-tomentose pubescence, and grows at lower elevations.

Selected References

None.

Key

1 Phyllaries narrowly obovate, abruptly acute; cypselae sericeous Pyrrocoma clementis var. clementis
1 Phyllaries narrowly lanceolate, apices attenuate; cypselae glabrous Pyrrocoma clementis var. villosa