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FNA | Family List | FNA Vol. 21 | Asteraceae | Rudbeckia

15g. Rudbeckia fulgida Aiton var. umbrosa (C. L. Boynton & Beadle) Cronquist, Rhodora. 47: 400. 1945.

Shady coneflower

Rudbeckia umbrosa C. L. Boynton & Beadle, Biltmore Bot. Stud. 1: 16. 1901; R. chapmanii C. L. Boynton & Beadle

Stems glabrous or sparsely hirsute (hairs antrorse to spreading). Leaves: basal blades ovate, 1.5–3.5 cm wide, lengths to 2 times widths, bases broadly rounded to cordate, margins coarsely dentate, faces glabrous or sparsely hairy; cauline petiolate (proximal) to nearly sessile (distal), ovate to lanceolate, not notably smaller distally, bases rounded to attenuate, margins usually coarsely serrate, sometimes entire, faces sparsely to moderately hairy. Phyllaries reflexed, 1–2.2 × 0.25–0.5 cm, glabrous or sparsely hairy. Receptacles 10–15 mm diam.; palea margins ciliate, faces glabrous. Ray florets 8–12; laminae 10–30 mm. 2n = 76.

Flowering late summer–fall. Wet woodlands, bottoms; 30–400 m; Ala., Ark., Ga., Ind., Ky., Miss., Mo., N.C., Ohio, S.C., Tenn., Va.


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