Rudbeckia montana

A. Gray

Proc. Amer. Acad. Arts 17: 217. 1882.

Common names: Montane coneflower
Endemic
Synonyms: Rudbeckia occidentalis var. montana (A. Gray) Perdue
Treatment appears in FNA Volume 21. Treatment on page 51. Mentioned on page 47.

Perennials, to 150 cm (rhizomes stout, plants not colonial, roots fibrous). Leaves 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). Heads borne singly or in ± corymbiform arrays. Phyllaries to 4 cm (margins sometimes ciliate, apices attenuate). Receptacles ovoid to conic; paleae (proximally transparent to light brown, distally greenish) 5–8 mm, apices acute to ± rounded, abaxial tips hairy. Ray florets 0. Discs 20–60 × 12–30 mm. Disc florets 200–500+; corollas maroon proximally, greenish distally, 4–5 mm; style branches ca. 1.5 mm, apices acute to rounded. Cypselae 5.2–7 mm; pappi coroniform, to 1.8 mm. 2n = 36.


Phenology: Flowering summer.
Habitat: Hillside seeps, streams
Elevation: 2400–2800 m

Discussion

Selected References

None.

Lower Taxa

None.