Difference between revisions of "Townsendia hookeri"
Contr. Gray Herb. 183: 95, plates 17, 20, figs. 5, 6. 1957.
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| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=F | ||
| + | |label=Illustrated | ||
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|publication title=Contr. Gray Herb. | |publication title=Contr. Gray Herb. | ||
|publication year=1957 | |publication year=1957 | ||
| − | |special status= | + | |special status=Illustrated;Endemic |
| − | |source xml=https:// | + | |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V19-20-21/V20_440.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Townsendia | |genus=Townsendia | ||
Revision as of 21:48, 27 May 2020
Perennials, 1–3 cm (± pulvinate). Stems ± erect; internodes 0.1–1 mm, ± strigose. Leaves basal and cauline, blades narrowly oblanceolate to linear, 5–25(–40+) × 1–1.5(–3) mm, fleshy, faces ± strigoso-sericeous, little, if at all. Heads ± sessile. Involucres ± campanulate, 8–18+ mm diam. Phyllaries 50–65+ in 5+ series, the longer ± lance-linear, 7–11(–13) mm (l/w = 6–9), apices attenuate, abaxial faces sparsely strigose or glabrate. Ray florets 15–35; corollas white adaxially, laminae 8–12+ mm, glabrous abaxially. Disc florets 120–180+; corollas 4–5(–6+) mm. Cypselae 3.5–4.5 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae ca. 30 subulate to setiform scales (1–)5–7 mm; on disc cypselae ca. 30 subulate to setiform scales 5.5–7.5+ mm. 2n = 18.
Phenology: Flowering Mar–Jun.
Habitat: Gravelly benches, sandy slopes
Elevation: 700–1800 m
Distribution
Alta., B.C., Sask., Yukon, Alaska, Colo., Idaho, Mont., Nebr., N.Dak., S.Dak., Utah, Wyo.
Discussion
Selected References
None.