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basin goldenrod, showy goldenrod

Habit Plants 3–20 dm; rhizomes short, stout.
Stems

usually simple, glabrous.

Leaves

basal and cauline;

blades oblanceolate to linear, 1–30 cm;

margins entire;

tips acute;

surfaces glabrous;

basal present at flowering, sessile, or with wing-margined or linear petioles.

Inflorescences

thyrse- or panicle-like arrays, sometimes flat-topped;

bracts present, sometimes minute.

Involucres

broadly to narrowly campanulate, 3–5 mm.

Ray florets

6–15.

Disc florets

8–20;

corollas 1.5–4.5 mm.

Phyllaries

in 3–5 series, elliptic-lanceolate or linear;

surfaces glabrous; outer gradually shorter.

Fruits

1.5–2.5 mm, strigose.

Heads

mostly short-pedunculate.

2n

=18.

Solidago sempervirens

Solidago spectabilis

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

Meadows, bogs, hot springs, streambanks, lake shores. Flowering Jun–Aug. 1200–2200 m. BR, ECas, Owy. CA, ID, NV; southeast to AZ. Native.

Source Flora of Oregon, volume 2, page 346
Kenton Chambers
Sibling taxa
S. elongata, S. gigantea, S. lepida, S. missouriensis, S. multiradiata, S. simplex, S. spathulata, S. spectabilis, S. velutina
S. elongata, S. gigantea, S. lepida, S. missouriensis, S. multiradiata, S. simplex, S. spathulata, S. velutina
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