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Erigeron salmonensis
S.J. Brunsfeld & G.L. Nesom
Family:
Asteraceae
Salmon River Fleabane
FNA
Resources
Guy L. Nesom in Flora of North America (vol. 20)
Perennials,
15-35 cm; taprooted, caudex branches relatively thick, retaining old leaf bases.
Stems
erect, glabrous, eglandular.
Leaves
basal (usually persistent) and cauline; basal blades linear to linear-oblanceolate, (30-)60-110 × 2-4 mm, cauline gradually reduced distally, margins entire, faces glabrous, eglandular.
Heads
1(-3).
Involucres
3-3.5 × 5-6 mm.
Phyllaries
in 2-3 series, glabrous, minutely glandular.
Ray florets
11-15; corollas white, drying lilac, often with an abaxial midstripe, 8-9 mm, laminae not coiling or reflexing.
Disc corollas
2.1-2.5 mm.
Cypselae
1.5-2.2 mm, 2-nerved, faces sparsely strigose;
pappi:
outer of setae, inner of 12-15 bristles.
2
n
= 18.
Flowering May-Jun. Crevices and ledges of steep, northfacing, lower cliffs (gneiss and schist); 1000-1200 m; Idaho.
Erigeron salmonensis
is known only in the Salmon River Canyon.
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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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