Flora of North America species comparison

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Eucephalus elegans

Eucephalus glabratus

elegant aster

Siskiyou aster, smooth aster
Habit Perennials 30–70 cm (caudices woody; herbage scabrous). Perennials, 30–60 cm (rhizomes branched).
Stems

erect, moderately scabrous and/or glandular.

ascending to erect, glabrous or sparsely stipitate-glandular.
Leaves

mid and cauline blades linear-oblong or linear-lanceolate, 2–6 cm × 3–10 mm, faces moderately scabrous and ± short-stipitate-glandular.

mid and distal blades lanceolate to lance-ovate, 3–6 cm × 5–15 mm, ± glabrous.
Peduncles

glandular-puberulent.

glabrous or sparsely glandular.
Involucres

turbinate-cylindric, 6–9 mm.

campanulate, 8–9 mm.
Phyllaries

in 3–5 series (often purplish at margins), ovate, margins eciliate, apices acute, abaxial faces moderately to densely puberulent and glandular.

in 3–5 series (sometimes reddish apically), lanceolate to narrowly ovate (unequal), apices acute, abaxial glabrous or sparsely glandular.
Heads

3–8(–15) in racemiform to corymbiform arrays.

3–8 in corymbiform arrays.
Cypselae

strigose;

pappus bristles in 2 series, barbellate.

appressed-pilose;

pappus bristles in 2 series, ± smooth.
Rays

usually 5 or 8, purple.

0 or 1–2(–4), violet-purple.
2n

= 18.

Eucephalus elegans

Eucephalus glabratus
Phenology Flowering Jul–Aug. Flowering Jul–Aug.
Habitat Open meadows, aspen forests, rocky open slopes Dry open oak or coniferous forest or chaparral
Elevation 1100–3200 m (3600–10500 ft) 700–2300 m (2300–7500 ft)
Distribution
from FNA
CO; ID; MT; NV; OR; UT
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR
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[BONAP county map]
Discussion

Eucephalus glabratus is found in the Klamath Mountains of northwestern California and southwestern Oregon. The species is reported to intergrade with E. breweri, E. ledophyllus, and E. tomentellus.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 40. FNA vol. 20, p. 41.
Parent taxa Asteraceae > tribe Astereae > Eucephalus Asteraceae > tribe Astereae > Eucephalus
Sibling taxa
E. breweri, E. engelmannii, E. glabratus, E. glaucescens, E. gormanii, E. ledophyllus, E. paucicapitatus, E. tomentellus, E. vialis
E. breweri, E. elegans, E. engelmannii, E. glaucescens, E. gormanii, E. ledophyllus, E. paucicapitatus, E. tomentellus, E. vialis
Synonyms Aster perelegans, E. perelegans Aster brickellioides var. glabratus, Aster siskiyouensis, E. glandulosus
Name authority Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 298. (1840) (Greene) 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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