Flora of North America species comparison

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Eucephalus tomentellus

Eucephalus glaucescens

brickellbush aster, hairy rayless aster, rayless aster

Klickitat aster
Habit Perennials 40–90 cm (caudices woody). Perennials, 40–160 cm (with caudices; herbage glabrous, ± glaucous).
Stems

erect, woolly or cottony.

erect, glabrous.
Leaves

mid and distal blades lanceolate to elliptic, 2.5–6 cm × 7–20 mm, abaxial faces glabrous or glabrate, adaxial ± densely woolly to cottony.

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

pubescent.

glabrous or sparsely stipitate-glandular.
Involucres

turbinate, 7–10 mm.

turbinate to campanulate, 7–9 mm.
Phyllaries

in 4–6 series (often reddish at margins and apices), linear-oblong to ovate (strongly unequal), apices acute, abaxial faces tomentose to stipitate-glandular.

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

3–40 in racemiform to paniculiform arrays.

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

glabrous or pilose;

pappus bristles in 2 series, ± barbellate.

obconic, flattened, strigose;

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

(0–)1–3(–6), violet-purple.

commonly 8 or 13, purple.

Eucephalus tomentellus

Eucephalus glaucescens
Phenology Flowering Jul–Aug. Flowering Jul–Sep(–Oct).
Habitat Open oak or coniferous woods, forest openings and rocky cliffs Open coniferous woods, meadows, brushy slopes
Elevation 1300–2400 m (4300–7900 ft) 800–1500 m (2600–4900 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
WA
[WildflowerSearch map]
[BONAP county map]
Discussion

Eucephalus tomentellus grows in the Siskiyou Mountains of southwestern Oregon and northern California. It may intergrade with E. breweri and E. glabratus.

(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.)
Source FNA vol. 20, p. 42. FNA vol. 20, p. 41.
Parent taxa 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. paucicapitatus, E. vialis
E. breweri, E. elegans, E. engelmannii, E. glabratus, E. gormanii, E. ledophyllus, E. paucicapitatus, E. tomentellus, E. vialis
Synonyms Sericocarpus tomentellus, Aster brickellioides, Aster tomentellus, E. bicolor, E. brickellioides Aster engelmannii var. glaucescens, Aster glaucescens, Aster glaucophyllus, Aster serrulatus, E. glaucophyllus, E. serrulatus
Name authority (Greene) Greene: Pittonia 3: 55. (1896) (A. Gray) Greene: Pittonia 3: 56. (1896)
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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