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Olympic mountain-aster

wayside aster

Cascade aster

Habit Perennials 20–55 cm (caudices woody). Perennials, 60–120 cm (caudices stout). Perennials, 20–80 cm (caudices stout).
Stems

ascending to erect, pilose or glandular-pubescent.

erect, pilose to glandular-pubescent.

erect, pilose to stipitate-glandular.

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 lance-elliptic to oblong, 2.5–7 cm × 5–20 mm, glabrous or sparsely pubescent abaxially, ± densely cottony and sometimes stipitate-glandular adaxially.

Peduncles

stipitate-glandular.

stipitate-glandular.

pilose to stipitate-glandular.

Heads

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

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

3–20 in racemiform to corymbiform arrays.

Involucres

turbinate-obconic, 7–9 mm.

turbinate, 8–10 mm.

turbinate, 7–11 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 (usually reddish at margins and apices), lanceolate (strongly unequal), apices acute to acuminate, abaxial faces puberulent to stipitate-glandular.

Cypselae

obconic, pilose;

pappus bristles in 2 series, ± barbellate.

pilose;

pappus bristles in 2 series, smooth or ± barbellate.

pilose;

pappus bristles in 2 series, smooth or ± barbellate.

Rays

7–13(–21), white.

5–21, purple.

2n

= 18.

Eucephalus paucicapitatus

Eucephalus vialis

Eucephalus ledophyllus

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

eucephalus ledophyllus may intergrade with e. engelmannii in the northern part of its range

Varieties 2 (2 in the flora).

(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
CA; OR; 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. glaucescens, E. gormanii, E. paucicapitatus, E. tomentellus, E. vialis
Subordinate taxa
E. ledophyllus var. covillei, E. ledophyllus var. ledophyllus
Key
1.Peduncles glandular or not, at least ± woolly or cottony; rays usually 13 or 21E. ledophyllus var. ledophyllus
1.Peduncles glandular, not cottony; rays usually 5 or 8E. ledophyllus var. covillei
Synonyms Aster engelmannii var. paucicapitatus, Aster paucicapitatus Aster vialis Aster engelmannii var. ledophyllus, Aster ledophyllus
Name authority (B. L. Robinson) Greene: Pittonia 3: 56. (1896) Bradshaw: Torreya 20: 122. (1921) (A. Gray) Greene: Pittonia 3: 55. (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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