8.
Pyrrocoma lanceolata
(Hooker) Greene, Erythea. 2: 69. 1894.
Lance-leaf goldenweed
Donia lanceolata
Hooker, Fl. Bor.-Amer. 2: 25. 1834;
Haplopappus lanceolatus
(Hooker) Torrey & A. Gray
Plants
20—50 cm.
Stems
1—10, decumbent to ascending or erect, red-tinged, sometimes branched, sparsely leafy, ± tomentulose or glabrous, sometimes stipitate-glandular.
Leaves:
basal blades lanceolate or rarely oblanceolate to narrowly elliptic, 50—300 × 8—30 mm, margins sharply dentate, eciliate, apices acute, spinulose; cauline sessile, lanceolate, bases clasping; faces ± tomentulose to glabrate or glabrous, sometimes stipitate-glandular.
Heads
(1—)4—20(—50) in corymbiform or paniculiform arrays.
Peduncles
0—6 cm.
Involucres
hemispheric, 7—10 × 10—18 mm.
Phyllaries
in 3—4 series, linear-lanceolate to lanceolate, 3—11 mm, unequal, bases white-chartaceous, margins entire, eciliate, apices conspicuously green, faces glabrous or tomentulose, rarely stipitate-glandular.
Ray florets
18—45; corollas 6—11 mm.
Disc florets
20—100; corollas 5—7 mm.
Cypselae
oblong, 3.5—4.5 mm, 4-angled, faces striate, sericeous;
pappi
tawny, 5—7 mm.
Varieties 2 (2 in the flora): w North America.
Pyrrocoma lanceolata
has the widest range of any species and exhibits much variability in habit and head size. A number of infraspecific taxa have been recognized in the past; only two were retained by R. A. Mayes (1976).
