62. Boechera ophira (Rollins) Al-Shehbaz, Novon 13: 387. 2003; Arabis ophira Rollins, Syst. Bot. 6: 56. 1981. TYPE: United States, Nevada, Nye Co., Toiyabe Range, near Ophir Pass, T13N, R41E, open rocky area, 13 Jun 1979, R. C. & K. W. Rollins 79231 (holotype, GH!; isotype, GH!).

     Plants long-lived, cespitose perennials, often with woody caudices, lacking crowded, persistent leaf bases; sexual, with ellipsoid pollen. Stems usually 1 per caudex branch, arising near ground surface from center of basal rosettes, 0.4–1.4 dm, lower parts with abundant short-stalked, 2–3-rayed trichomes 0.2–0.3 mm, upper parts sparsely to moderately pubescent. Leaves at stem bases narrowly oblanceolate to linear, 0.8–1.8 mm wide, entire, ciliate on petiole with simple trichomes to 0.8 mm, blade surfaces densely pubescent with short-stalked, 2–3-rayed trichomes 0.2–0.3 mm; cauline leaves 6–10, somewhat concealing stem proximally, the uppermost pubescent, with auricles to 0.5 mm. Inflorescences mostly unbranched, 6–15-flowered; fruiting pedicels 3–8 mm, ascending, straight, with appressed, branched trichomes. Flowers ascending at anthesis; sepals pubescent; petals purplish, 4–5 ´ 1.0–1.8 mm, glabrous; ovules 50–60 per fruit. Fruits 2.5–4.0 cm ´ 1.2–1.8 mm, suberect or ascending, occasionally appressed to rachises, not secund, straight, with parallel edges, glabrous; style 0.05–0.10 mm. Seeds uniseriate, 1.2–1.8 ´ 1.0–1.5 mm; wing continuous, 0.1–0.2 mm wide.

Flowering: May–Jun.

Habitat: rocky slopes or gravelly soil in subalpine meadows.

Elevation: 3000–3200 m.

Distribution: United States (Nevada/Toiyabe Range).

Reproductive mode: sexual diploid.