Pyrrocoma apargioides |
Pyrrocoma crocea |
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alpine pyrrocoma, alpine-flames |
curly-head goldenweed |
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Habit | Plants 5–18(–30) cm. | Plants (10–)18–80 cm. | ||||
Stems | 1–7, procumbent to decumbent or ascending, red tinged, scapiform, glabrous or sparsely tomentose. |
2–10, erect or ascending, pale or reddish, often stout, usually glabrous, often tomentose distally. |
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Leaves | basal petiolate, blades lanceolate to narrowly oblanceolate, 30–100 × 2–18 mm (leathery), margins usually coarsely dentate to laciniate, rarely entire, ciliate; cauline sessile, blades linear-lanceolate (bractlike), 10–20 × 1–2 mm; faces glabrous, eglandular. |
basal petiolate, blades oblanceolate to spatulate or narrowly elliptic, 80–450 × 5–60 mm (firm, leathery, succulent), margins entire or undulate, eciliate, apices acute or obtuse, faces usually glabrous, rarely puberulent, eglandular; cauline sessile, blades lanceolate, 10–120 × 5–30 mm, bases clasping. |
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Peduncles | 2–3 cm. |
1–5 cm. |
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Involucres | hemispheric, 7–13 × 13–20 mm. |
hemispheric, 10–20 × 15–60 mm. |
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Ray florets | 11–40; corollas 7–16 mm. |
30–90; corollas (bright yellow) 9–30 mm. |
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Disc florets | 45–90; corollas 5–7 mm. |
100+; corollas 7–13 mm. |
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Phyllaries | in 3–4 series, green, oblanceolate to narrowly oblong, 4–10 mm, unequal, margins white to purplish, entire, ciliate, apices green, broad, acute, faces glabrous. |
in 2–3 series (loose), usually green, sometimes yellowish, oblong to spatulate, 9–15 mm, subequal, margins pale, entire or denticulate, eciliate, apices ± erect, obtuse, broad. |
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Heads | usually borne singly, terminal, rarely 1–2 smaller proximally. |
usually borne singly, terminal, sometimes 2–6 (not subtended by leaflike bracts). |
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Cypselae | fusiform, slightly flattened, 5–7 mm, 3-angled, faces striate, glabrous; pappi tawny, 5–7.5 mm. |
narrowly oblong, compressed, 5–8 mm, 4-angled, faces striate, glabrous; pappi tawny, 6–12 mm. |
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2n | = 12. |
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Pyrrocoma apargioides |
Pyrrocoma crocea |
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Phenology | Flowering Jul–Sep. | |||||
Habitat | Openings in pine forest, wet meadows, open rocky slopes | |||||
Elevation | 2100–3700 m (6900–12100 ft) | |||||
Distribution |
CA; NV; UT
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AZ; CO; NM; UT; WY
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Discussion | Pyrrocoma apargioides is distinguished by its sharply serrate or laciniate leaves, subscapiform stems with bractlike cauline leaves, and heads usually borne singly. It is thought to be closely related to P. racemosa (H. M. Hall 1928; R. A. Mayes 1976). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 in the flora). Pyrrocoma crocea is recognized by its thick stems, large, firm leaves, and large heads with oblong to spatulate phyllaries. H. M. Hall (1928) considered it the ancestral form of Pyrrocoma because of its large heads, numerous florets, long rays, and short style-branch appendages. R. A. Mayes (1976) suggested it is closely related to P. integrifolia. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 415. | FNA vol. 20, p. 417. | ||||
Parent taxa | Asteraceae > tribe Astereae > Pyrrocoma | Asteraceae > tribe Astereae > Pyrrocoma | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Haplopappus apargioides, P. demissa | Haplopappus croceus | ||||
Name authority | (A. Gray) Greene: Erythea 2: 70. (1894) | (A. Gray) Greene: Erythea 2: 69. (1894) | ||||
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