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Erigeron muirii
A. Gray
Family:
Asteraceae
Muir's Fleabane
FNA
Resources
Guy L. Nesom in Flora of North America (vol. 20)
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.
2
n
= 18.
Flowering Jul-Aug. Rocky slopes and ridges, tundra, gravel barrens, sandstone outcrops; of conservation concern; 300-1000 m; Yukon; Alaska.
Erigeron muirii
is known from Herschel Island in northern Yukon. Its densely lanate vestiture gives the whole plant a gray-green aspect.
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This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].
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