78. Boechera porphyrea (Wooton & Standley) Windham, Al-Shehbaz & P. Alexander, Harvard Pap. Bot. 11: 272. 2007; Arabis porphyrea Wooton & Standley, Contr. U.S. Natl. Herb. 16: 123. 1913. TYPE: United States, New Mexico, Dona Ana Co., Organ Mts, the Cueva, 25/4/1907, E. O. Wooton & P. Standley s.n. (holotype, US!).
Plants mostly long-lived perennials, often with woody caudices, lacking crowded, persistent leaf bases; apomictic, with spheroid pollen. Stems 1 to several per caudex branch, somewhat elevated on woody bases or produced at ground surface, arising from center of basal rosettes or laterally below sterile shoots, 2–5(–9) dm, lower parts glabrous or rarely with few simple and short-stalked, 2–3-rayed trichomes 0.1–0.5 mm, upper parts glabrous. Leaves at stem bases oblanceolate, (3–)5–15 mm wide, dentate, ciliate at least on petioles with trichomes to 1 mm, blade surfaces with short-stalked, 2–6-rayed trichomes 0.1–0.5 mm; cauline leaves 5–17(–21), occasionally concealing stem proximally, the uppermost glabrous, with auricles 0.5–3.5(–5.5) mm. Inflorescences mostly unbranched, 10–30(–70)-flowered; fruiting pedicels 10–27 mm, horizontal, gently curved downward, glabrous. Flowers ascending at anthesis; sepals glabrous; petals lavender, 6.5–8.5 ´ 1–2.5 mm, glabrous; ovules 100–160 per fruit. Fruits 3–7 cm ´ 1.8–2.5 mm, widely pendent, not appressed to rachises, not secund, usually curved, with parallel edges, glabrous; style 0.2–0.5 mm. Seeds subbiseriate, 1.1–1.6 ´ 0.9–1.1 mm; wing continuous, 0.1–0.2 mm wide.
Habitat: rocky slopes in evergreen woodland or desert scrub.
Elevation: 1250–2100 m.
Distribution: United States (New Mexico, Texas).
Reproductive mode: apomictic triploid.