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Boechera grahamii (Lehm.) Windham & Al-Shehbaz Search in The Plant ListSearch in IPNISearch in Australian Plant Name IndexSearch in NYBG Virtual HerbariumSearch in Muséum national d'Histoire naturelleSearch in Type Specimen Register of the U.S. National HerbariumSearch in Virtual Herbaria AustriaSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Published In: Harvard Papers in Botany 12(1): 241. 2007. (Harvard Pap. Bot.) Name publication detail
 

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

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40. Boechera grahamii (Lehmann) Windham & Al-Shehbaz, Harvard Pap. Bot. 12: 241. 2007; Turritis grahamii Lehmann, Del. Sem. Hort. Hamb. 7. 1831 (also in Linnaea 6: Litt. 74. 1831); based on T. patula Graham, Edinburgh New Philos. J. [7]: 350. 1829, not T. patula Ehrhart, Beitr. 7: 159. 1792; Arabis patula Torrey, Bot. U.S. and Mex. Bound. Surv. 1: 32. 1859, not A. patulaWeinmann, Cat. Hort. Dorp. 18. 1810, nor A. patula Host, Fl. Austr. 2: 271. 1831. TYPE: Rocky Mts., Drummond s.n. (Lectotype designated by Windham & Al-Shehbaz (2007: 241), K!).

Turritis brachycarpa Torrey & A. Gray, Fl. N. Amer. 1: 79. 1838; Arabis drummondii A. Gray var. brachycarpa (Torrey & A. Gray) A. Gray, Manual, ed. 5. 69. 1867; A. confinis S. Watson var. brachycarpa (Torrey & A. Gray) S. Watson & J. M. Coulter in A. Gray, Manual, ed. 6. 67. 1890; A. brachycarpa (Torrey & A. Gray) Britton, Mem. Torrey Bot. Club. 5: 174. 1894, not Ruprecht, Fl. Caucas. 73. 1869; A. holboellii Hornemann var. brachycarpa (Torrey & A. Gray) S. L. Welsh, Utah Fl., ed. 3. 256. 2003; Boechera brachycarpa (Torrey & A. Gray) Dorn, Vasc. Pl. Wyoming, ed. 3. 375. 2001; Turritis drummondii (A. Gray) Lunell var. brachycarpa (Torrey & A. Gray) Lunell, Amer. Midl. Naturalist 5: 236. 1919; TYPE: United States, Michigan, Gratiot Co., Fort Gratiot [Point Huron], Z. Pitcher s.n. (lectotype designated by Holmgren (2004: 245), NY!).

Arabis confinis S. Watson, Proc. Amer. Acad. Arts 22: 466. 1887. TYPE: Canada, Manitoba, Lake Winnipeg Valley, 1857, E. Bourgeau s.n. (lectotype designated by Windham & Al-Shehbaz (2007: 241), GH!; isolectotype, E!).

Arabis bourgovii Rydberg, Mem. N.Y. Bot. Gard. 1: 186. 1900. TYPE: Same as Turritis patula Graham.

Arabis dacotica Greene, Leafl. Bot. Observ. Crit. 2: 80. 1910; A. divaricarpa A. Nelson var. dacotica (Greene) B. Boivin, Amer. Midl. Nat. 54: 510. 1955. TYPE: United States, South Dakota, Fort Meade, W. H. Forwood 28 (holotype, US!).

Arabis divaricarpa A. Nelson var. stenocarpa M. Hopkins, Rhodora 39: 133. 1937; A. patula Torrey var. stenocarpa (M. Hopkins) Farwell, Papers Mich. Acad. Sci. 26: 14. 1941. TYPE: Canada, Quebec, Rimouski Co., slaty ridges east of the village, Bic, 4 Jul 1907, M. L. Fernald & J. F. Collins 1057 (holotype, GH!; isotype, CAN!).

Arabis divaricarpa var. hemicylindrica B. Boivin, Amer. Midl. Nat. 54: 510. 1955; A. boivinii G. A. Mulligan, Rhodora 97: 157. 1996. TYPE: Canada, Saskatchewan, District de Maple Creek, 10 miles au sud, Carmichael, monts Cypres, ecorre de la coulee du ruisseau Bone, 9 Jul 1952, B. Boivin & J. F. Alex 9738 (holotype, DAO!; isotypes, GH!, MT).

     Plants short-lived perennials to biennials, with or without caudices, lacking crowded, persistent leaf bases; apomictic, with spheroid pollen. Stems usually 1 per caudex branch, arising near ground surface from center of basal rosettes, (1.2–)2.0–12.0 dm, lower parts glabrous or with simple and sessile or subsessile, 2–3(–6)-rayed trichomes to 1 mm, upper parts glabrous. Leaves at stem bases oblanceolate, 1.5–10(–20) mm wide, entire to dentate, ciliate proximally with simple trichomes to 1 mm, blade surfaces sparsely to densely pubescent with sessile or subsessile, 2–4(–7)-rayed trichomes 0.2–0.6 mm; cauline leaves (10–)13–52, often concealing stem proximally, the uppermost glabrous, with auricles 1–5 mm. Inflorescences mostly unbranched, 16–88-flowered; fruiting pedicels 5–22(–30) mm, divaricate-ascending to descending, gently curved downward or rarely straight, glabrous. Flowers divaricate at anthesis; sepals glabrous or pubescent; petals white or rarely lavender, 5.5–8.0 ´ 1.0–2.0 mm, glabrous; ovules 84–146 per fruit. Fruits 3.5–9.0 cm ´ 1.0–1.8 mm, divaricate-ascending to pendent, not appressed to rachises, not secund, straight or slightly curved, with parallel edges, glabrous; style 0.05–0.5 mm. Seeds uniseriate to subbiseriate, 1.0–1.8 ´ 0.8–1.2 mm; wing continuous, 0.1–0.25 mm wide. 2n = 21.

Flowering: May–Aug.

Habitat: rocky slopes and sandy soil in prairies and open forests.

Elevation: 100–3150 m.

Distribution: Canada (Alberta, British Columbia, Manitoba, Northwest Territories, Ontario, Quebec, Saskatchewan, Yukon), United States (Alaska, Colorado, Michigan, Minnesota, Montana, New York, Dakota, South Dakota, Vermont, Washington, Wisconsin, Wyoming).

Reproductive mode: apomictic triploid.

 

 
 
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