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Rudbeckia alpicola

showy black-eyed susan, showy coneflower, Washington, Washington showy black-eyed susan, Wenatchee coneflower, Wenatchee Mountain, Wenatchee Mountain showy black-eyed susan, Wenatchee Mountains coneflower

montane coneflower

Habit Perennials, to 150 cm (rhizomes stout, plants not colonial, roots fibrous). Perennials, to 150 cm (rhizomes stout, plants not colonial, roots fibrous).
Leaves

green, ovate to elliptic or deltate, pinnate to pinnatifid or lyrate-pinnatifid, herbaceous, faces moderately to densely hairy (hairs 1-seriate);

basal petiolate, 25–70 × 8–45 cm, lobes 3–9, bases rounded to acute, apices acute;

cauline petiolate or sessile, 12–50 × 5–40 cm, bases attenuate to cuneate, ultimate margins dentate to lobed, apices acute.

greenish blue (± glaucous), blades elliptic to ovate, usually pinnatifid to pinnately lobed (lobes mostly opposite, ovate to elliptic), ± leathery, bases attenuate to cuneate, ultimate margins entire or coarsely dentate, apices acute, faces usually glabrous, sometimes sparsely hairy (at least abaxially on veins);

basal petiolate, 17–60 × 10–25 cm;

cauline petiolate or sessile, 8–30 × 5–20 cm (blades among heads not lobed).

Receptacles

columnar;

paleae 5–7 mm, apices obtuse to acute, often apiculate, abaxial tips hairy.

ovoid to conic;

paleae (proximally transparent to light brown, distally greenish) 5–8 mm, apices acute to ± rounded, abaxial tips hairy.

Ray florets

0.

0.

Disc florets

300–500;

corollas brown-purple, 4.2–5.8 mm;

style branches ca. 2 mm, apices acute.

200–500+;

corollas maroon proximally, greenish distally, 4–5 mm;

style branches ca. 1.5 mm, apices acute to rounded.

Phyllaries

to 6 cm (foliaceous, faces scabrous).

to 4 cm (margins sometimes ciliate, apices attenuate).

Heads

borne singly or (2–10) in ± corymbiform arrays.

borne singly or in ± corymbiform arrays.

Cypselae

3.5–5 mm;

pappi of 4 scales, to 1 mm.

5.2–7 mm;

pappi coroniform, to 1.8 mm.

Discs

30–80 × 18–30 mm.

20–60 × 12–30 mm.

2n

= 36.

Rudbeckia alpicola

Rudbeckia montana

Phenology Flowering mid summer–fall. Flowering summer.
Habitat Thickets, bogs, along streams Hillside seeps, streams
Elevation 200–1500 m (700–4900 ft) 2400–2800 m (7900–9200 ft)
Distribution
from FNA
WA
[WildflowerSearch map]
[BONAP county map]
from FNA
CO; UT
[BONAP county map]
Discussion

Of conservation concern.

Rudbeckia alpicola is known only from Chelan and Kittitas counties.

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

Source FNA vol. 21, p. 47. FNA vol. 21, p. 51.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Rudbeckiinae > Rudbeckia > sect. Macrocline Asteraceae > tribe Heliantheae > subtribe Rudbeckiinae > Rudbeckia > sect. Macrocline
Sibling taxa
R. amplexicaulis, R. auriculata, R. californica, R. fulgida, R. glaucescens, R. graminifolia, R. grandiflora, R. heliopsidis, R. hirta, R. klamathensis, R. laciniata, R. maxima, R. missouriensis, R. mohrii, R. mollis, R. montana, R. nitida, R. occidentalis, R. scabrifolia, R. subtomentosa, R. texana, R. triloba
R. alpicola, R. amplexicaulis, R. auriculata, R. californica, R. fulgida, R. glaucescens, R. graminifolia, R. grandiflora, R. heliopsidis, R. hirta, R. klamathensis, R. laciniata, R. maxima, R. missouriensis, R. mohrii, R. mollis, R. nitida, R. occidentalis, R. scabrifolia, R. subtomentosa, R. texana, R. triloba
Synonyms R. occidentalis var. alpicola R. occidentalis var. montana
Name authority Piper: Erythea 7: 173. (1899) A. Gray: Proc. Amer. Acad. Arts 17: 217. (1882)
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