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thick-stemmed aster

Habit Plants 1.2–6 dm.
Stems

glabrous proximally, glandular-puberulent distally.

Leaves

basal and cauline, lanceolate to oblanceolate or elliptic, 3–20 cm, bases often truncate and auriculate-clasping;

margins entire;

surfaces glabrous;

basal petiolate;

cauline usually sessile.

Involucres

8–14 mm.

Ray florets

8–25;

corollas 10–15 mm, purple-violet.

Disc florets

20–50.

Phyllaries

in 3–4 series, chartaceous below becoming herbaceous above or only at tips, narrowly lanceolate to linear, often purplish;

margins rarely ciliate;

surfaces glandular-puberulent.

Fruits

4–4.5 mm, brown, puberulent;

pappus bristles 7–8 mm.

Heads

peduncles 5–30 mm, glandular-puberulent.

2n

=18.

Eurybia integrifolia

Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

Coniferous woods, grasslands, open slopes, riverbanks, roadsides. Flowering Jul–Sep. 1200–2400 m. BW. CA, ID, NV, WA; northeast to MT, east to WY, southeast to UT. Native.

Source Flora of Oregon, volume 2, page 269
Kenton Chambers
Sibling taxa
E. conspicua, E. merita, E. radulina
Synonyms Aster integrifolius
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