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Published In: Harvard Papers in Botany 11(1): 82. 2006. (Harvard Pap. Bot.) Name publication detail

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

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95. Boechera serpenticola Windham & Al-Shehbaz, Harvard Pap. Bot. 11: 82. 2006. TYPE: United States, California, Trinity County, North Fork Trinity River, Hobo Gulch Camp and vicinity, 18 miles NW of Weaverville, along the Hobo Gulch road at Blue Ridge, open serpentine ridge, 3700 ft, T35N, R11W, sect. 7, 8 Jun 1972, E. Carter 362.01 (holotype, CAS, fruiting material on right side of sheet).

     Plants long-lived, cespitose perennials, 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, 0.5–1.8 dm, lower parts with abundant short-stalked, 5–8-rayed trichomes 0.1–0.2, upper parts sparsely to moderately pubescent. Leaves at stem bases narrowly oblanceolate, 1–2 mm wide, entire, ciliate on petiole with branched hairs to 0.5 mm, blade surfaces densely pubescent with short-stalked, 5–8-rayed trichomes 0.1–0.2 mm; cauline leaves 4–14, rarely concealing stem proximally, the uppermost densely pubescent, with auricles 0.1–0.5 mm. Inflorescences unbranched, 10–20-flowered; fruiting pedicels 3–7 mm, horizontal, nearly straight, with appressed, branched trichomes. Flowers ascending at anthesis; sepals pubescent; petals purple, 6–8 ´ 1.5–2.5 mm, glabrous; ovules 20–24 per fruit. Fruits 3.0–4.5 cm ´ 2.5–3.0 mm, horizontal or (rarely) widely pendent, not appressed to rachises, not secund, straight or slightly curved, with parallel edges, sparsely pubescent to nearly glabrous; style 1.5–2.0 mm. Seeds uniseriate, 2.0–2.5 ´ 1.5–1.8 mm; wing continuous, to 0.2 mm wide.

Flowering: Mar–Jun.

Habitat: serpentine ridges and talus.

Elevation: ca. 1150 m.

Distribution: United States (California/Shasta and Trinity counties).

Reproductive mode: sexual diploid.


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