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Published In: Novon 13(4): 385. 2003. (Novon) Name publication detailView in BotanicusView in Biodiversity Heritage Library

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

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34. Boechera fructicosa (A. Nelson) Al-Shehbaz, Novon 13: 385. 2003; Arabis fructicosa A. Nelson, Bot. Gaz. 30: 190. 1900. TYPE: United States, Wyoming, Yellowstone National Park, Undine Falls, dry roadsides, 6 Jul 1899, A. & E. Nelson 5681 (holotype, RM!; isotypes, GH!, MO!, NY!, US!).

     Plants short-lived perennials, with mostly non-woody caudices, lacking crowded, persistent leaf bases; apomictic, with spheroid pollen. Stems 3 to many per caudex branch, arising near ground surface from margin of basal rosettes, 3.5–6.0 dm, lower parts with short-stalked, 2–4-rayed trichomes 0.2–0.3 mm, upper parts glabrous. Leaves at stem bases oblanceolate, 3–7 mm wide, dentate, ciliate proximally with simple trichomes to 0.3 mm, blade surfaces pubescent with short-stalked, 4–8-rayed trichomes 0.05–0.2 mm; cauline leaves 5–10, not concealing stem, the uppermost glabrous, with auricles 0.5–1 mm. Inflorescences mostly unbranched, 10–18-flowered; fruiting pedicels 5–10 mm, divaricate-descending, straight, glabrous. Flowers divaricate-ascending at anthesis; sepals pubescent; petals lavender, 4–6 ´ 1.0–1.5 mm, glabrous; ovules 60–70 per fruit. Fruits 4–6 cm ´ 1.5–1.8 mm, divaricate-descending, not appressed to rachises, not secund, curved, with parallel edges, glabrous; style 0.1–0.4 mm. Seeds uniseriate, 1.5–2.0 ´ 1.0–1.3 mm; wing distal, ca. 0.1 mm wide.

Flowering: Jun–Jul.

Habitat: dry, disturbed soil.

Distribution: United States (NW Wyoming).




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