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Boechera paupercula (Greene) 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 11(1): 75. 2006. (Harvard Pap. Bot.) Name publication detail
 

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

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68. Boechera paupercula (Greene) Windham & Al-Shehbaz, Harvard Pap. Bot. 11: 75. 2006; Arabis paupercula Greene, Leafl. Bot. Observ. Crit. 2: 77. 1910. TYPE: United States, California, Tulare County, Farewell Gap, 10,600 ft, Sep 1897, C. A. Purpus 5229½ (holotype, US!; isotypes, E!, GH!, MO!, UC!).

Arabis nubigena J. F. Macbr. & Payson, Contr. Gray Herb. 49: 62. 1917; A. lyallii S. Wats. var. nubigena (J. F. Macbr. & Payson) Rollins, Rhodora 43: 367. 1941; A. microphylla Nuttall var. nubigena (J. F. Macbr. & Payson) Rollins, Res. Stud. State Coll. Wash. 4: 40. 1936. TYPE: United States, Idaho, Blaine County, gravelly flat, exposed alpine summit, Smoky Mts., 9000 ft, 13 Aug 1916, J. F. Macbride & E. B. Payson 3772 (holotype, GH!; isotypes, CAS!, E!, K!, MO!, NY!, POM!, RM!, US!).

     Plants long-lived, cespitose perennials, often with 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, 0.3–1.5 dm, lower parts with abundant simple and short-stalked, 2–4-rayed trichomes (0.07)0.10–0.20 mm, upper parts glabrous or sparsely pubescent. Leaves at stem bases linear-oblanceolate, 1–3(–5) mm wide, entire, ciliate proximally with trichomes to 0.4 mm, blade surfaces densely pubescent with short-stalked, 2–6-rayed trichomes (0.07)0.10–0.20 mm; cauline leaves 2–6, rarely concealing stem, the uppermost glabrous, without auricles or (rarely) 0.2–1.5 mm. Inflorescences unbranched, 3–8-flowered; fruiting pedicels 3–9 mm, erect, straight, glabrous or sparsely pubescent. Flowers erect at anthesis; sepals glabrous or sparsely pubescent; petals lavender to purplish, 4–6(–7) ´ 1–2 mm, glabrous; ovules 24–40 per fruit. Fruits 2.5–5.5 cm ´ 1.3–1.7(–2.0) mm, erect, appressed to rachises, not secund, straight, with parallel edges, glabrous; style 0.2–1.0 mm. Seeds uniseriate or rarely subbiseriate, 1.5–2(–2.5) ´ 1.0–1.4 mm; wing continuous, 0.3–1.0 mm wide.

Flowering: Jun­–Aug.

Habitat: rock outcrops, talus slopes, and gravelly soil in alpine and subalpine habitats.

Elevation: 2400–3350 m.

Distribution: United States (California, Idaho, Oregon, Washington, Wyoming).

Reproductive mode: sexual diploid.

 

 
 


 

 
 
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