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Published In: Brittonia 55(1): 3. 2003. (Brittonia) Name publication detail

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

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93. Boechera schistacea (Rollins) Dorn, Brittonia 55: 3. 2003; Arabis schistacea Rollins, Contr. Dudley Herb. 3: 370. 1946. TYPE: United States, Nevada, Nye Co., 15 mi. W of Round Mt., Toiyabe Mts., open slope, 9000 ft., 11 Jul 1938, R. C. Rollins & T. S. Chambers 2512 (holotype, DS!; isotype, GH!).

     Plants long-lived perennial, with woody caudices, lacking crowded, persistent leaf bases; sexual, with ellipsoid pollen. Stems usually 2–5 per caudex branch, elevated above ground surface on woody bases, arising from margin of basal rosettes, 0.8–2.5(–4) dm, glabrous throughout. Leaves at stem bases linear to narrowly oblanceolate, 1.2–2.5 mm wide, entire, ciliate proximally with simple trichomes 0.3–0.7 mm, blade surfaces glabrous or sparsely pubescent with short-stalked, 2–3-rayed trichomes 0.2–0.5 mm; cauline leaves 2–5(–9), not concealing stem, the uppermost glabrous, with auricles 0.2–0.5 mm. Inflorescences mostly unbranched, 5–12-flowered; fruiting pedicels 5–9 mm, reflexed, curved, glabrous. Flowers divaricate-ascending at anthesis; sepals glabrous; petals white to lavender, 4–6 ´ 1.0–1.5 mm, glabrous; ovules 24–36 per fruit. Fruits 1.8–4.5 cm ´ 1.5–2.0 mm, pendent, not appressed to rachises, not secund, straight, with parallel edges, glabrous; style 0.2–0.5 mm. Seeds uniseriate, 0.9–1.2 ´ 0.7–0.9 mm; wingless. 2n = 14.

Flowering: May–Jul.                          

Habitat: rocky slopes and gravelly soil in sagebrush, open conifer forest, and subalpine meadows.

Elevation: 2400–3200 m.

Distribution: United States (Nevada, Utah).

Reproductive mode: sexual diploid.


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