Leaves usually only 1, relatively short, 10–20 cm. Scape 10–30 cm, smooth or slighty scabrous. Flowers: perianth dull yellow, sometimes with darker midvein color extending into abaxial portion of perianth, tube 5–7 mm, ca. 1/2 length of lobes, lobes spreading, 9–12 mm; short filaments 2–4 mm, long filaments 3–5 mm, apical appendages short, straight or incurved; anthers cream or yellow; pedicel 1–4 cm. 2n = 14, 16.

Flowering spring. Coniferous forests, in clay and granite soils; 600--2000 m; Calif., Oreg.