Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Eucephalus breweri

Eucephalus glabratus

Brewer's aster

Siskiyou aster, smooth aster
Habit Perennials, 10–100 cm (caudices woody). Perennials, 30–60 cm (rhizomes branched).
Stems

ascending to erect, glabrate or woolly, eglandular or glandular.

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

mid and distal blades linear-lanceolate to ovate, 2–5 cm × 6–15 mm, faces glabrate and eglandular to moderately glandular and/or woolly.

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

sparsely to densely woolly and glandular.

glabrous or sparsely glandular.
Involucres

turbinate-cylindric, 6–10 mm.

campanulate, 8–9 mm.
Phyllaries

in 3–4 series (sometimes reddish along margins), lance-linear to lance-oblong, ± subequal, margins eciliate, apices acuminate, abaxial faces glabrate and eglandular to moderately woolly or glandular.

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

1–15(–35) in racemiform to corymbiform or paniculiform arrays.

3–8 in corymbiform arrays.
Cypselae

strigose;

pappus bristles in 1 series (6–10 mm), barbellate.

appressed-pilose;

pappus bristles in 2 series, ± smooth.
Rays

0.

0 or 1–2(–4), violet-purple.
2n

= 18.

Eucephalus breweri

Eucephalus glabratus
Phenology Flowering Jul–Sep. Flowering Jul–Aug.
Habitat Open coniferous forest and subalpine meadows Dry open oak or coniferous forest or chaparral
Elevation 1500–3000(–3500) m (4900–9800(–11500) ft) 700–2300 m (2300–7500 ft)
Distribution
from FNA
CA; NV
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Eucephalus breweri is found in the Sierra Nevada. Specimens at the northern edge of the range may intergrade with E. glabratus and E. tomentellus.

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

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. elegans, 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 Chrysopsis breweri, Aster breweri, Heterotheca breweri Aster brickellioides var. glabratus, Aster siskiyouensis, E. glandulosus
Name authority (A. Gray) G. L. Nesom: Phytologia 77: 254. (1995) (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).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America, OregonFlora

The species comparison tool is brought to you by:
Northwest Wildflowers