Flora of North America species comparison

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Eucephalus breweri

Eucephalus tomentellus

Brewer's aster

brickellbush aster, hairy rayless aster, rayless aster
Habit Perennials, 10–100 cm (caudices woody). Perennials 40–90 cm (caudices woody).
Stems

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

erect, woolly or cottony.
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 elliptic, 2.5–6 cm × 7–20 mm, abaxial faces glabrous or glabrate, adaxial ± densely woolly to cottony.
Peduncles

sparsely to densely woolly and glandular.

pubescent.
Involucres

turbinate-cylindric, 6–10 mm.

turbinate, 7–10 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 4–6 series (often reddish at margins and apices), linear-oblong to ovate (strongly unequal), apices acute, abaxial faces tomentose to stipitate-glandular.
Heads

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

3–40 in racemiform to paniculiform arrays.
Cypselae

strigose;

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

glabrous or pilose;

pappus bristles in 2 series, ± barbellate.
Rays

0.

(0–)1–3(–6), violet-purple.
2n

= 18.

Eucephalus breweri

Eucephalus tomentellus
Phenology Flowering Jul–Sep. Flowering Jul–Aug.
Habitat Open coniferous forest and subalpine meadows Open oak or coniferous woods, forest openings and rocky cliffs
Elevation 1500–3000(–3500) m (4900–9800(–11500) ft) 1300–2400 m (4300–7900 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 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.)
Source FNA vol. 20, p. 40. FNA vol. 20, p. 42.
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. glabratus, E. glaucescens, E. gormanii, E. ledophyllus, E. paucicapitatus, E. vialis
Synonyms Chrysopsis breweri, Aster breweri, Heterotheca breweri Sericocarpus tomentellus, Aster brickellioides, Aster tomentellus, E. bicolor, E. brickellioides
Name authority (A. Gray) G. L. Nesom: Phytologia 77: 254. (1995) (Greene) Greene: Pittonia 3: 55. (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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