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.

"broader" is not a number.

... more about "Townsendia exscapa"
glabrate +  and strigillose +
not tailed +, rounded +  and obtuse +
distinct +
obtuse;acute +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
(Richardson) Porter +
decurrent +
Aster exscapus +
4 cm40 mm <br />0.04 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (4 cm40 mm <br />0.04 m <br />) +
less spatulate;narrowly oblanceolate or linear +
not fleshy +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
rugulose +  and muricate +
barbellulate +  and barbellate +
not 2-lipped +  and actinomorphic +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
obovate +  and oblanceolate +
fertile +  and bisexual +
fertile +  and bisexual +
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 +
hairy +  and strigillose +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Openings in pine forests, meadows, gravelly hills, sandy soils +
glochidiform +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
less hirsute +  and strigose or glabrate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
hemispheric +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
cauline +  and basal +
spreading;erect +
lance-deltate +  and lance-oblong +
dentate to pinnatifid +  and entire +
lobed +, toothed +  and entire +
2-carpellate +
persistent +
20 +  and 30 +
Flowering Mar–Jun(–Aug). +
1.4 cm14 mm <br />0.014 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
linear +  and subulate +
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Mem. Torrey Bot. Club +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
convex;flat +
20 +  and 30 +
setiform +
0.65 cm6.5 mm <br />0.0065 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
exalbuminous +
Illustrated +
villous +, strigose +, strigillose +, sericeous +, piloso-strigose +, piloso-hirsute +, pilose +, hispidulous +, glabrous +  and glabrate +
strigoso-scabrellous +  and scabrellous +
lance-deltate +  and attenuate +
appendaged +  and truncate +
papillate +  and smooth +
Townsendia sericea +
Townsendia exscapa +
Townsendia +
species +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
tree +, shrub +  and subshrub +