Flora of North America species comparison

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Eucephalus vialis

wayside aster
Habit Perennials, 60–120 cm (caudices stout).
Stems

erect, pilose to glandular-pubescent.
Leaves

middle and distal cauline blades lanceolate-elliptic, 5–9 cm × 15–30 mm, abaxial faces usually glabrous, sometimes sparsely pubescent, adaxial faces glandular-pubescent.
Peduncles

stipitate-glandular.
Involucres

turbinate, 8–10 mm.
Ray florets

0.
Phyllaries

in 3–6 series (sometimes reddish at margins and apices), linear to linear-oblong (strongly unequal), apices acute to acuminate, abaxial faces stipitate-glandular.
Heads

5–50(–120) in racemiform to paniculiform arrays.
Cypselae

pilose;

pappus bristles in 2 series, smooth or ± barbellate.

Eucephalus vialis
Phenology Flowering Jul.
Habitat Dry open oak or coniferous woods
Elevation 200–500 m (700–1600 ft)
Distribution
from FNA
OR
[BONAP county map]
Discussion

Of conservation concern.

Eucephalus vialis is only known from Lane and Douglas counties. It is considered threatened. It is in the Center for Plant Conservation’s National Collection of Endangered Plants.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 42.
Parent taxa Asteraceae > tribe Astereae > Eucephalus
Sibling taxa
E. breweri, E. elegans, E. engelmannii, E. glabratus, E. glaucescens, E. gormanii, E. ledophyllus, E. paucicapitatus, E. tomentellus
Synonyms Aster vialis
Name authority Bradshaw: Torreya 20: 122. (1921)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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