Pyrrocoma crocea
Pyrrocoma crocea var. crocea
curly-head goldenweed
curlyhead goldenweed
2–10, erect or ascending, pale or reddish, often stout, usually glabrous, often tomentose distally.
erect.
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.
100–450 × 20–60 mm.
1–5 cm.
hemispheric, 10–20 × 15–60 mm.
15–20 × 20–60 mm.
30–90;
corollas (bright yellow) 9–30 mm.
13–30 mm.
100+;
corollas 7–13 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.
usually borne singly, terminal, sometimes 2–6 (not subtended by leaflike bracts).
usually borne singly, sometimes 2–3.
narrowly oblong, compressed, 5–8 mm, 4-angled, faces striate, glabrous;
pappi tawny, 6–12 mm.
= 12, 24.
Pyrrocoma crocea
Pyrrocoma crocea var. crocea
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.)
Variety crocea has the largest and most attractive heads in the genus and is often used as an ornamental.
(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 |
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