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Published In: Novon 13(4): 388. 2003. (Novon) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 7/21/2009)

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86. Boechera repanda (S. Watson) Al-Shehbaz, Novon 13: 388. 2003; Arabis repanda S. Watson, Proc. Amer. Acad. Arts 11: 122. 1875. TYPE: United States, California, Mariposa Co., Yosemite Valley, 1866, H. N. Bolander 4881 (holotype, GH!; isotype, UC!).

Arabis inamoena Greene, Leafl. Bot. Observ. Crit. 2: 158. 1911, not Greene, Repert. Sp. Nov. Regni Veg. 5: 243. 1908. TYPE: United States, California, Inyo Co., Lake Sabrina, Bishop Creek, A. Davidson 2729 (holotype, NDG!; isotypes, JEPS!, RSA!).

Arabis repanda var. greenei Jepson. TYPE: United States, California, Inyo Co., Lake Sabrina, Bishop Creek, A. Davidson 2729 (holotype, JEPS!; isotypes, NDG!, RSA!).

     Plants short- to long-lived perennials, with mostly non-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, (1–)2–9 dm, lower parts with abundant, short- to long-stalked, 2–6-rayed trichomes 0.2–0.5 mm, rarely few simple trichomes to 1.5 mm long, upper parts glabrous or sparsely pubescent. Leaves at stem bases broadly oblanceolate to obovate, 10–25(–50) mm wide, repand to coarsely dentate or rarely entire, not ciliate, blade surfaces moderately to densely pubescent with short- to long-stalked, 3–6-rayed trichomes 0.2–0.5 mm; cauline leaves (3–)8–30, not concealing stem, the uppermost sparsely pubescent, without auricles. Inflorescences occasionally branched, 7–25-flowered; fruiting pedicels 3–10 mm, erect to divaricate-ascending, straight, glabrous or with spreading 2–5-rayed (rarely simple) trichomes. Flowers erect to ascending at anthesis; sepals glabrous or sparsely pubescent; petals white, 3.5–6.0 ´ 0.8–1.0 mm, glabrous; ovules 34–50 per fruit. Fruits (3.5–)5.0–13.5 cm ´ 2.5–4.0 mm, divaricate-ascending, not appressed to rachises, not secund, curved or rarely straight, with parallel edges, glabrous or pubescent throughout; style 0.5–1.5 mm. Seeds uniseriate, 2.5–5.0(–6.0) ´ 2.0–3.0(–3.5) mm; wing continuous, 0.7–1.8 mm wide. 2n = 14.

Flowering: Jun–Jul.

Habitat: rock outcrops, talus, and gravelly soil in meadows and open pine forests.

Elevation: 1570–3540 m.

Distribution: United States (California, Nevada)

Reproductive mode: sexual diploid.



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