P. L. Fiedler & R. K. Zebell in Flora of North America (vol. 26)
Stems usually branching, 1-3 dm. Leaves: basal persistent, ca. 2 dm; blade glabrous adaxially. Inflorescences 1-5-flowered. Flowers erect; perianth open, campanulate; sepals 25-30 mm; petals purplish, with darker purple abaxial crescent distal to gland, 30-40 mm, not ciliate at base, ± hairy; glands deeply depressed, bordered proximally by wide ciliate membrane, distally by short hairs. Capsules erect, 3-winged, ellipsoid, 20-25 mm. Seeds irregular. Flowering mid summer. Shrubby hillsides, open woodlands, dry soils and slopes; of conservation concern; 700--1100 m; Calif., Oreg.
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