Townsendia exscapa

(Richardson) Porter

Mem. Torrey Bot. Club 5: 321. 1894.

Illustrated
Basionym: Aster exscapus Richardson in J. Franklin et al., Narr. Journey Polar Sea, 748. 1823
Synonyms: Townsendia sericea Hooker
Treatment appears in FNA Volume 20. Treatment on page 200. Mentioned on page 195.

Perennials, 1–3 cm (± pulvinate). Stems ± erect; internodes 0.1–1 mm, ± hirsute to strigose or glabrate. Leaves basal and cauline, blades ± spatulate to narrowly oblanceolate or linear, 12–40(–75) × 2–6+ mm, not fleshy, faces ± strigillose. Heads ± sessile (usually nestled among rosette leaves). Involucres ± hemispheric, (10–)12–25+ mm diam. Phyllaries 30–45(–60) in 4–6+ series, the longer narrowly lanceolate or linear to subulate, (10–)12–14(–17) mm (l/w = 6–9), apices obtuse to acute, abaxial faces sparsely strigillose or glabrate. Ray florets 11–40; corollas white adaxially, laminae (9–)12–18+ mm, glabrous abaxially. Disc florets 100–150+; corollas 6.5–9(–12+) mm. Cypselae 4(–6+) mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae 20–30 setiform scales 6–8+ mm; on disc cypselae 20–30+ setiform scales 6.5–11+ mm. 2n = 18.


Phenology: Flowering Mar–Jun(–Aug).
Habitat: Openings in pine forests, meadows, gravelly hills, sandy soils
Elevation: (1300–)1600–2300(–3300) m

Distribution

V20-439-distribution-map.gif

Alta., Man., Sask., Ariz., Colo., Idaho, Kans., Mont., Nebr., Nev., N.Mex., N.Dak., Okla., S.Dak., Tex., Utah, Wyo., Mexico (Chihuahua).

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Townsendia exscapa"
John L. Strother +
(Richardson) Porter +
Aster exscapus +
Alta. +, Man. +, Sask. +, Ariz. +, Colo. +, Idaho +, Kans. +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, Okla. +, S.Dak. +, Tex. +, Utah +, Wyo. +  and Mexico (Chihuahua). +
(1300–)1600–2300(–3300) m +
Openings in pine forests, meadows, gravelly hills, sandy soils +
Flowering Mar–Jun(–Aug). +
Mem. Torrey Bot. Club +
Illustrated +
Townsendia sericea +
Townsendia exscapa +
Townsendia +
species +