11.
Townsendia incana
Nuttall, Trans. Amer. Philos. Soc., n. s. 7: 305. 1840.
Townsendia arizonica A. Gray
Perennials,
(1—)2—8(—12+) cm.
Stems
decumbent to erect; inter-nodes (0.5—)2—6(—12+) mm, usually densely piloso-hirsute, sometimes strigoso-scabrellous (surfaces usually hidden by hairs).
Leaves
basal and cauline, blades spatulate to narrowly oblanceolate, 3—12(—40+) × 1—2(—4+) mm, not fleshy, ± strigoso-scabrellous to strigillose.
Heads
at tips of stems (usually surpassed by leaves).
Involucres
± campanulate to hemispheric, (6—)10—15(—20) mm diam.
Phyllaries
16—28+ in 3—4+ series, the longer ± lance-ovate to lanceolate, (6—)8—9(—12+) mm (l/w = 2.5—5), apices acute, abaxial faces strigose.
Ray florets
(8—)13—34+; corollas white or pinkish adaxially, laminae 5—8(—12+) mm, abaxially usually glabrous, sometimes glandular-puberulent at bases.
Disc florets
60—80+; corollas 4.5—6.5+ mm.
Cypselae
3.5—4.5+ mm, faces hairy, hair tips glochidiform;
pappi
persistent; on ray cypselae 15—30 lanceolate or subulate to setiform scales 0.3—0.6 or 4—6+ mm; on disc cypselae 15—30+ subulate to setiform scales 4—6+ mm.
2
n
= 18.
Flowering Apr—Jul. Sandy soils, rocky benches, shales, with pinyons and junipers; 1100—2200 m; Ariz., Colo., Mont., Nev., N.Mex., Utah, Wyo.
