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Published In: Harvard Papers in Botany 13(2): 293. 2008. (Harvard Pap. Bot.) Name publication detail

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

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19. Boechera dentata (Rafinesque) Al-Shehbaz & Zarucchi, Harvard Pap. Bot. 13: 293. 2008; Shortia dentata Rafinesque, Autik. Bot. 17. 1840; Iodanthus dentatus (Rafinesque) Greene, Pittonia 3: 254. 1897; Arabis dentata Torrey & A. Gray, Fl. N. Amer. 1: 80. 1838, not Clairville, Man. Herbor. Suisse 223. 1811; A. perstellata E. Braun var. shortii Fernald, Rhodora 48: 208. 1946; A. shortii (Fernald) Gleason, Phytologia 4: 23. 1952; Boechera shortii (Fernald) Al-Shehbaz, Novon 13: 389. 2003; Sisymbrium dentatum Torrey in Short, 3rd suppl. Cat. Pl. Kentucky. 338. 1833, not Allioni, Fl. Pedem. 1: 275. 1785. TYPE: United States, Kentucky, sandy banks of the Ohio River, C. W. Short s.n. (lectotype designated by Mulligan (1996: 143): DWC; isolectoype, GH!).

 Arabis dentata var. phalacrocarpa M. Hopkins, Rhodora 39: 169. 1937; A. shortii var. phalacrocarpa (M. Hopkins) Steyermark, Rhodora 62: 130. 1960. TYPE: United Staes, Missouri, St. Clair Co., along shaded limestone bluffs of Osage River, E. J. Palmer 35650 (holotype, GH!).  

     Plants biennials, with or without caudices, lacking crowded, persistent leaf bases; sexual, with ellipsoid pollen. Stems usually 2–4 per plant or caudex branch, arising near ground surface from margin of basal rosettes or laterally below sterile shoot, 2–6 dm, lower parts with short-stalked, 2–4-rayed trichomes 0.15–0.40 mm, upper parts sparsely pubescent or glabrous Leaves at stem bases obovate to oblanceolate, (6–)10–45 mm wide, dentate, not ciliate, blade surfaces sparsely pubescent with simple trichomes 0.4–1.0 mm adaxially and with short-stalked, 3–4-rayed trichomes 0.15–0.40 mm abaxially; cauline leaves 4–20, rarely concealing stem, the uppermost sparsely pubescent, with auricles 1–8 mm. Inflorescences sparingly branched, 14–66-flowered; fruiting pedicels 1–6 mm, divaricate-ascending to slightly descending, straight, glabrous or with appressed, branched trichomes. Flowers divaricate at anthesis; sepals glabrous or sparsely pubescent; petals white or cream, 2.0–3.5 ´ 0.7–1.0 mm, glabrous; ovules 14–44 per fruit. Fruits 1.3–4.2 cm ´ 0.7–0.8 mm, divaricate-ascending to slightly descending, not appressed to rachises, not secund, straight or slightly curved, with parallel edges, sparsely pubescent throughout or rarely glabrous; style 0.1–0.5 mm. Seeds uniseriate, 0.7–1.1 ´ 0.5–0.6 mm; wingless.

Flowering Apr–Jun.

Habitat: bluffs and rocky ledges, wooded slopes, and floodplains.

Elevation: 100–250 m.

Distribution: United States (Alabama, Arkansas, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Kansas, Maryland, Michigan, Minnesota, Missouri, Nebraska, New York, Ohio, Oklahoma, Pennsylvania, South Dakota, Tennessee, Virginia, West Virginia, Wisconsin).

Reproductive mode: sexual diploid.




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