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Olympic mountain-aster

wayside aster

Klickitat aster

Habit Perennials 20–55 cm (caudices woody). Perennials, 60–120 cm (caudices stout). Perennials, 40–160 cm (with caudices; herbage glabrous, ± glaucous).
Stems

ascending to erect, pilose or glandular-pubescent.

erect, pilose to glandular-pubescent.

erect, glabrous.

Leaves

mid and distal blades elliptic to elliptic-oblong, 2–4 cm × 4–13 mm, sparsely scabrous to stipitate-glandular abaxially, moderately stipitate-glandular adaxially.

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

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

Peduncles

stipitate-glandular.

stipitate-glandular.

glabrous or sparsely stipitate-glandular.

Heads

usually 2–4 in racemiform to corymbiform arrays, somtimes borne singly.

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

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

Involucres

turbinate-obconic, 7–9 mm.

turbinate, 8–10 mm.

turbinate to campanulate, 7–9 mm.

Ray florets

0.

Phyllaries

in 2–3 series (whitish), lance-linear (unequal), apices acute, abaxial faces 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.

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

Cypselae

obconic, pilose;

pappus bristles in 2 series, ± barbellate.

pilose;

pappus bristles in 2 series, smooth or ± barbellate.

obconic, flattened, strigose;

pappus bristles in 2 series, smooth or ± barbellate.

Rays

7–13(–21), white.

commonly 8 or 13, purple.

Eucephalus paucicapitatus

Eucephalus vialis

Eucephalus glaucescens

Phenology Flowering Jul–Aug. Flowering Jul. Flowering Jul–Sep(–Oct).
Habitat Open subalpine meadows or scree slopes Dry open oak or coniferous woods Open coniferous woods, meadows, brushy slopes
Elevation 800–3300 m [2600–10800 ft] 200–500 m [700–1600 ft] 800–1500 m [2600–4900 ft]
Discussion

Eucephalus paucicapitatus is found on Vancouver Island, where it is very uncommon, and the Olympic Peninsula. It is closely related to E. gormanii.

(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.)

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.)

Distribution
from FNA
WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
OR
[BONAP county map]
from FNA
WA
[WildflowerSearch map]
[BONAP county map]
Parent taxa Asteraceae > tribe Astereae > Eucephalus Asteraceae > tribe Astereae > Eucephalus Asteraceae > tribe Astereae > Eucephalus
Sibling taxa
E. breweri, E. elegans, E. engelmannii, E. glabratus, E. glaucescens, E. gormanii, E. ledophyllus, E. tomentellus, E. vialis
E. breweri, E. elegans, E. engelmannii, E. glabratus, E. glaucescens, E. gormanii, E. ledophyllus, E. paucicapitatus, E. tomentellus
E. breweri, E. elegans, E. engelmannii, E. glabratus, E. gormanii, E. ledophyllus, E. paucicapitatus, E. tomentellus, E. vialis
Synonyms Aster engelmannii var. paucicapitatus, Aster paucicapitatus Aster vialis Aster engelmannii var. glaucescens, Aster glaucescens, Aster glaucophyllus, Aster serrulatus, E. glaucophyllus, E. serrulatus
Name authority (B. L. Robinson) Greene: Pittonia 3: 56. (1896) Bradshaw: Torreya 20: 122. (1921) (A. Gray) Greene: Pittonia 3: 56. (1896)
Source Flora of North America vol. 20, p. 42. Flora of North America vol. 20, p. 42. Flora of North America vol. 20, p. 41.
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