Tropicos | Name - Boechera lincolnensis Windham & Al-Shehbaz

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Boechera lincolnensis Windham & Al-Shehbaz

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56. Boechera lincolnensis Windham & Al-Shehbaz, Harvard Pap. Bot. 11: 71. 2006. TYPE: United States, Nevada, Lincoln County, WSW of Pony Springs on slopes below Kixmiller Summit ca. 1.56 km NW of South Mud Spring. T5N, R65E, sect. 9, 38°18'17'' N, 114°41'56''W (WGS84 Datum), 6175 ft, in gravelly (limestone and volcanics) soil on gentle W-facing slope with Artemisia, Pinus, Juniperus, and Purshia, 2 May 2004, M. D. Windham 3016 (holotype, UT!; isotypes, BRY!, DUKE!, MO!, NMC!, NY!).

Arabis pulchra M. E. Jones ex S. Watson var. munciensis M. E. Jones, Contr. W. Bot. 14: 42. 1912; Boechera pulchra (M. E. Jones ex S. Wats.) W. A. Weber var. munciensis (M. E. Jones) Dorn, Brittonia 55: 3. 2003. TYPE: United States, Nevada, White Pine County, Muncy, 19 May 1906, 6500 ft, M. E. Jones s.n. (lectotype designated by Rollins (1941: 460), POM 94144!; isolectotype, POM!).

Plants long-lived perennial, with woody caudices, lacking crowded, persistent leaf bases; sexual, with ellipsoid pollen. Stems usually 1 per caudex branch, elevated above ground surface on woody bases, arising from center of leaf tuft, 2–4.2 dm, lower parts with abundant short-stalked, 3–6-rayed trichomes 0.1–0.5 mm, upper parts similarly pubescent. Leaves at stem bases linear or linear-oblanceolate, 1–2 mm wide, entire, rarely ciliate near petiole bases with simple trichomes to 1 mm, blade surfaces densely pubescent with short-stalked, 3–8-rayed trichomes 0.1–0.4 mm; cauline leaves 10–25, concealing stem proximally, the uppermost densely pubescent, lacking auricles or (rarely) with auricles to 1 mm. Inflorescences mostly unbranched, 7–15-flowered; fruiting pedicels 10–20(–25) mm, divaricate-ascending, straight to slightly curved proximally, recurved distally, with appressed, branched trichomes. Flowers divaricate-ascending at anthesis; sepals pubescent; petals lavender to purple, 10–12 ´ 2–3 mm, occasionally with few trichomes abaxially; ovules 86–120 per fruit. Fruits (3.2–)4.0–5.5 cm ´ 2.0–2.5 mm, widely pendent, not appressed to rachises, not secund, straight, with parallel edges, pubescent throughout; style 0.1–0.3 mm. Seeds biseriate, 1.0–1.5 ´ 0.7–0.9 mm; wing continuous, 0.07–0.12 mm wide. 2n = 14.

Flowering: Apr–May.

Habitat: rocky slopes and gravelly soil with sagebrush and other shrubs.

Elevation: 1370–1900 m.

Distribution: United States (California, Nevada, Utah).

Reproductive mode: sexual diploid.