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Brewer's aster

wayside aster

Habit Plants 2–7 dm. Plants 5–12(13) dm.
Stems

ascending to erect, glabrous to sparsely pubescent or glandular.

erect, pilose to glandular-pubescent.

Leaves

linear-lanceolate to ovate, 2–6 cm × 5–12 mm;

surfaces glabrate to ± glandular-pubescent or woolly-pubescent.

lanceolate to elliptic, 4–10 cm × 15–30 mm;

surfaces abaxially glandular-pubescent, adaxially glabrous.

Inflorescences

corymb- to panicle- or raceme-like arrays.

panicle- to raceme-like arrays.

Involucres

turbinate-cylindric, 5–10 mm.

turbinate, 7–10 mm.

Ray florets

0.

0.

Phyllaries

in 3–4 series, linear-lanceolate to lanceolate-oblong, subequal;

tips acuminate;

surfaces glabrate to ± glandular or woolly-pubescent; outer ? ? as long as involucres.

in 3–6 series, strongly imbricate, linear to linear-oblong, subequal;

tips acute to acuminate;

surfaces glabrate to glandular-pubescent; outer nearly as long as inner; < ? as long as involucres.

Fruits

± strigose;

pappus bristles in 2 series, barbellate.

pilose;

pappus bristles in 2 series; smooth to ± barbellate.

Heads

3–15, discoid.

5–50(120), discoid.

2n

=18.

=18.

Eucephalus breweri

Eucephalus vialis

Distribution
[WildflowerSearch map]
[BONAP county map]
[BONAP county map]
Discussion

Open coniferous woods, meadows. Flowering Jul–Sep. 1200–1800 m. Sisk. CA, NV. Native.

Dry open woodland. Flowering Jun–Sep. 100–1700 m. Casc, Sisk, WV. CA. Native.

This species hybridizes with E. glabratus in the southern part of its range.

Source Flora of Oregon, volume 2, page 265
Geraldine Allen
Flora of Oregon, volume 2, page 267
Geraldine Allen
Sibling taxa
E. elegans, E. glabratus, E. gormanii, E. gormanii x Eucephalus ledophyllus, E. ledophyllus, E. tomentellus, E. tomentellus x Eucephalus vialis, E. vialis
E. breweri, E. elegans, E. glabratus, E. gormanii, E. gormanii x Eucephalus ledophyllus, E. ledophyllus, E. tomentellus, E. tomentellus x Eucephalus vialis
Synonyms Aster breweri, Chrysopsis breweri Aster vialis
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