Difference between revisions of "Erigeron muirii"
Proc. Amer. Acad. Arts 17: 210. 1882.
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|name=Erigeron grandiflorus subsp. muirii | |name=Erigeron grandiflorus subsp. muirii | ||
|authority=(A. Gray) Hultén | |authority=(A. Gray) Hultén | ||
| + | |rank=subspecies | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Astereae;Erigeron;Erigeron muirii | |hierarchy=Asteraceae;Asteraceae tribe Astereae;Erigeron;Erigeron muirii | ||
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name=Erigeron muirii | name=Erigeron muirii | ||
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|authority=A. Gray | |authority=A. Gray | ||
|rank=species | |rank=species | ||
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|publication year=1882 | |publication year=1882 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V20_732.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Erigeron | |genus=Erigeron | ||
Revision as of 20:30, 16 December 2019
Perennials, 3–10(–12) cm; rhizomatous, fibrous-rooted, rhizomes or caudices simple, relatively short and thick. Stems erect, densely cobwebby-lanate (hairs white), eglandular. Leaves basal (persistent) and cauline; blades oblanceolate to subspatulate, (10–)20–60 × 2–10 mm, margins entire, faces lanate, eglandular; cauline blades oblong to linear-oblong, gradually reduced, bractlike. Heads 1. Involucres 8–10 × 12–20 mm. Phyllaries in 2(–3) series (purple beneath pubescence), densely and closely lanate, sparsely glandular (glandularity obscured). Ray florets 60–100; corollas white, often drying pinkish, 8–13 mm (mostly 1–2 mm wide), laminae coiling. Disc corollas 3.5–5 mm. Cypselae 1.9–2.2 mm, 2-nerved, faces strigose-hirsute; pappi: outer of setae, inner of 13–20 bristles. 2n = 18.
Phenology: Flowering Jul–Aug.
Habitat: Rocky slopes and ridges, tundra, gravel barrens, sandstone outcrops
Elevation: 300–1000 m
Discussion
Of conservation concern.
Erigeron muirii is known from Herschel Island in northern Yukon. Its densely lanate vestiture gives the whole plant a gray-green aspect.
Selected References
None.