Pyrrocoma hirta |
Pyrrocoma clementis |
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hairy goldenweed, large sticky goldenweed, sticky goldenweed, sticky pyrrocoma, tacky goldenweed |
tranquil goldenweed |
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Habit | Plants 10–60 cm. | Plants 3–18(–40) cm. | ||||||||||||
Stems | 1–4, erect or ascending, reddish, sometimes sparsely leafy, sparsely to densely villous, tomentose, or woolly, usually stipitate-glandular distally. |
1–5, ascending or decumbent, pale and often red-tinged, sparsely villous, sometimes tomentose. |
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Leaves | basal petiolate, blades lanceolate to oblanceolate or elliptic, 40–200 × 8–45 mm, margins usually coarsely, sharply serrate, sometimes entire, frequently stipitate-glandular, sometimes ciliate, apices acute, faces villous to tomentose, sometimes stipitate-glandular; cauline petiolate, lanceolate, 15–75 × 3–20 mm, becoming sessile and reduced distally, bases clasping. |
(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. |
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Peduncles | 1–4 cm. |
0.5–1 cm. |
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Involucres | hemispheric to campanulate, 7–12 × 8–20 mm. |
broadly campanulate, 8–15 × 20–35 mm. |
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Ray florets | 10–34; corollas 6–15 mm. |
21–55; corollas 10–18 mm. |
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Disc florets | 30–60; corollas 5–7 mm. |
100+; corollas 6–8 mm. |
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Phyllaries | in 2–3 series, loose or appressed, green throughout or only distally (bases chartaceous), linear-lanceolate, unequal to subequal, apices acute, faces villous to tomentose, sometimes stipitate-glandular. |
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. |
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Heads | usually 3–7 in loose, racemiform arrays, rarely borne singly (short- or long-pedunculate). |
usually borne singly, terminal, sometimes 2–3 smaller proximally, not subtended by leaflike bracts. |
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Cypselae | subcylindric, 3–4.5 mm, 3–4-angled, faces striate, sericeous-strigose; pappi whitish to tawny, 5–7 mm. |
subfusiform, not compressed, 4–7 mm, 4-angled, faces striate, sericeous or glabrous; pappi tawny, 6–8 mm. |
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Pyrrocoma hirta |
Pyrrocoma clementis |
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Distribution |
CA; ID; NV; OR; UT; WA
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CO; UT; WY
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Discussion | Varieties 3 (3 in the flora). Pyrrocoma hirta is recognized by its relatively short stature, villous, glandular-stipitate stems, lanceolate, coarsely serrate leaves, and loose, racemiform arrays. R. A. Mayes (1976) suggested that it is closely related to P. lanceolata. Much overlap occurs in the characters used to differentiate the varieties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 417. | FNA vol. 20, p. 416. | ||||||||||||
Parent taxa | Asteraceae > tribe Astereae > Pyrrocoma | Asteraceae > tribe Astereae > Pyrrocoma | ||||||||||||
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Subordinate taxa | ||||||||||||||
Synonyms | Haplopappus hirtus | Haplopappus clementis | ||||||||||||
Name authority | (A. Gray) Greene: Erythea 2: 69. (1894) | Rydberg: Bull. Torrey Bot. Club 27: 625. (1900) | ||||||||||||
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