in P. A. Rydberg, Fl. Rocky Mts., 1061. 1917.
Plants (50–) 70–150 (–200) cm. Stems erect, glabrous or pubescent. Leaves: ocrea reddish-brown, funnelform, 1–3 cm, margins oblique, glabrous or pubescent; petiole 5–20 mm; blade lanceolate to ovatelanceolate, 5–15 (–19) × 1.4–7.5 cm, not subcoriaceous, base rounded, margins entire, usually scabrous to ciliate, rarely glabrous, apex obtuse to acuminate, faces not glaucous, glabrous or densely pubescent. Inflorescences usually terminal, subterminal, and axillary, paniclelike; peduncle 0.5–12 cm, glabrous or pubescent. Pedicels 0.9–4 mm. Flowers 1–3 per ocreate fascicle, rarely some flowers with stamens poorly developed; perianth white to greenish white, 2.5–3.5 mm; tepals slightly dimorphic, ovate to obovate, apex obtuse; anthers yellow to pink. Achenes usually exserted, yellowish-brown, not beaked distally, (3–) 3.8–7 × 2.3–4.8 mm, shiny, faces concave.
Calif., Idaho, Mont., Nev., Oreg., Wash.
Varieties 2 (2 in the flora).
"/2" is not declared as a valid unit of measurement for this property.