Pyrrocoma crocea
Pyrrocoma clementis
curly-head goldenweed
tranquil goldenweed
2–10, erect or ascending, pale or reddish, often stout, usually glabrous, often tomentose distally.
1–5, ascending or decumbent, pale and often red-tinged, sparsely villous, sometimes tomentose.
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.
(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.
1–5 cm.
0.5–1 cm.
hemispheric, 10–20 × 15–60 mm.
broadly campanulate, 8–15 × 20–35 mm.
30–90;
corollas (bright yellow) 9–30 mm.
21–55;
corollas 10–18 mm.
100+;
corollas 7–13 mm.
100+;
corollas 6–8 mm.
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.
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.
usually borne singly, terminal, sometimes 2–6 (not subtended by leaflike bracts).
usually borne singly, terminal, sometimes 2–3 smaller proximally, not subtended by leaflike bracts.
narrowly oblong, compressed, 5–8 mm, 4-angled, faces striate, glabrous;
pappi tawny, 6–12 mm.
subfusiform, not compressed, 4–7 mm, 4-angled, faces striate, sericeous or glabrous;
pappi tawny, 6–8 mm.
Pyrrocoma crocea
Pyrrocoma clementis
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.)
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.)
1. Plants 30–80 cm, robust; heads usually borne singly; involucres 15–20 × 20–40 mm; ray florets 13–30 mm | var. crocea |
1. Plants 10–30 cm, slender; heads usually 2–6, occasionally 1; involucres 10–15 × 15–20 mm; ray florets 9–12 mm | var. genuflexa |
1. Phyllaries narrowly obovate, abruptly acute; cypselae sericeous | var. clementis |
1. Phyllaries narrowly lanceolate, apices attenuate; cypselae glabrous | var. villosa |
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