Flora of North America species comparison

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Eucephalus glaucescens

Eucephalus vialis

Klickitat aster

wayside aster
Habit Perennials, 40–160 cm (with caudices; herbage glabrous, ± glaucous). Perennials, 60–120 cm (caudices stout).
Stems

erect, glabrous.

erect, pilose to glandular-pubescent.
Leaves

mid and distal blades linear to narrowly lance-elliptic, 4–10 cm × 4–16 mm.

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

glabrous or sparsely stipitate-glandular.

stipitate-glandular.
Involucres

turbinate to campanulate, 7–9 mm.

turbinate, 8–10 mm.
Ray florets

0.
Phyllaries

in 3–5 series (reddish distally), linear to lanceolate or lance-ovate (unequal), apices acuminate, abaxial faces sparsely stipitate-glandular.

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

5–20(–60) in racemiform to paniculiform arrays.

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

obconic, flattened, strigose;

pappus bristles in 2 series, smooth or ± barbellate.

pilose;

pappus bristles in 2 series, smooth or ± barbellate.
Rays

commonly 8 or 13, purple.

Eucephalus glaucescens

Eucephalus vialis
Phenology Flowering Jul–Sep(–Oct). Flowering Jul.
Habitat Open coniferous woods, meadows, brushy slopes Dry open oak or coniferous woods
Elevation 800–1500 m (2600–4900 ft) 200–500 m (700–1600 ft)
Distribution
from FNA
WA
[WildflowerSearch map]
[BONAP county map]
from FNA
OR
[BONAP county map]
Discussion

Of conservation concern.

Eucephalus glaucescens is known from the vicinity of Mt. Adams in Klickitat, Skamania, and Yakima counties. Intermediates with E. ledophyllus have been reported.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

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. 41. FNA vol. 20, p. 42.
Parent taxa Asteraceae > tribe Astereae > Eucephalus Asteraceae > tribe Astereae > Eucephalus
Sibling taxa
E. breweri, E. elegans, E. engelmannii, E. glabratus, E. gormanii, E. ledophyllus, E. paucicapitatus, E. tomentellus, E. vialis
E. breweri, E. elegans, E. engelmannii, E. glabratus, E. glaucescens, E. gormanii, E. ledophyllus, E. paucicapitatus, E. tomentellus
Synonyms Aster engelmannii var. glaucescens, Aster glaucescens, Aster glaucophyllus, Aster serrulatus, E. glaucophyllus, E. serrulatus Aster vialis
Name authority (A. Gray) Greene: Pittonia 3: 56. (1896) 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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