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FNA | Family List | FNA Vol. 9 | Rosaceae | Drymocallis

13. Drymocallis campanulata (C. L. Hitchcock) Ertter, J. Bot. Res. Inst. Texas. 1: 43. 2007.

John Day drymocallis or wood beauty

Potentilla glandulosa Lindley var. campanulata C. L. Hitchcock in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. 1: 861. 1969

Caudex branches elongate. Stems openly tufted to loosely spaced, 1.5–4.5 dm; base 1.2–3.5 mm diam., ± densely septate-glandular. Leaves sparsely to ± densely hairy; basal 6–20 cm, leaflet pairs (2–)3–4(–5); terminal leaflet broadly obovate to nearly round, 1–4 × 1–3.5 cm, teeth usually ± double, 5–10 per side, apex rounded; cauline 0–2, well developed, leaflet pairs 2–3. Inflorescences 5–50-flowered, leafy, open, (1/5–)1/2(–4/5) of stem, wide, branch angles 25–50°. Pedicels 2–5 (proximal to 10) mm, sparsely to moderately short-hairy, predominantly septate-glandular. Flowers opening narrowly; epicalyx bractlets usually lanceolate, sometimes linear, 3–4 × 1–1.5 mm; sepals ± erect, 5–8 mm, apex acute to obtuse; petals overlapping, ± erect, light yellow, broadly obovate, 5–11 × (3–)5–8 mm, equal to or exceeding sepals; filaments 1.5–3 mm, anthers 1 mm; styles slender, (1–)1.5–2.5 mm. Achenes light brown, 1 mm.

Flowering May–Jul. Basaltic cliffs and talus above streams; 700–1400 m; Oreg.

Drymocallis campanulata is one of the more distinct species in the genus, with its campanulate flowers, relatively large butter yellow petals, and densely glandular pedicels. It occurs primarily in the canyons of the John Day River in Grant and Wheeler counties.

The invalidly published Potentilla campanulata D. D. Keck provides a full description and illustration for the subsequent basionym.


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