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FOC | Family List | FOC Vol. 13 | Violaceae | Viola

89. Viola wallichiana Gingins in Candolle, Prodr. 1: 300. 1824.

西藏细距堇菜 xi zang xi ju jin cai

Herbs perennial. Rhizome short, robust, densely noded, covered with scales, with numerous rootlets. Stems 1-4, 5-10 cm tall, slender, 4-6-noded, leafless in lower part, glabrous or very sparsely puberulous. Basal leaves 2-4; petiole long, 2.5-6 cm, slender; leaf blade reniform or suborbicular, 8-15 mm × 1.5-2.5 cm, both surfaces glabrous, puberulous only along margin, base cordate, margin crenate, apex rounded. Cauline leaves smaller; stipules free, narrowly ovate to lanceolate, ca. 3 mm, submembranous, apex acuminate; petiole shorter, 2-10 mm; leaf blade reniform or nearly cordate, base shallowly cordate or truncate, apex acute. Flowers in upper leaf axils, yellow; pedicels 2-3 cm, slender, bracteolate at upper part; bracteoles reduced, membranous. Sepals narrow, subulate, 4-6 × 0.8-1 mm, apex acute, basal auricles inconspicuous, margin narrowly membranous, glabrous. Upper and lateral petals oblong-obovate, 7-9 × 2.5-3 mm, anterior one broadly obovate, ca. 1.4 cm (spur included), ca. 7 mm wide, apex shallowly 2-dentate; spur tubular, 4-6 mm, ca. 0.8 mm in diam., apex acute; spur of anterior stamens angular, ca. 3 mm. Ovary ovoid-globose, glabrous; styles clavate, base conspicuously geniculate, 2-lobed in upper part, lobes spreading, thick. Capsule ovoid-globose, ca. 3 mm, glabrous. Fl. and fr. Jul-Aug.

Rock crevices in forest understories; ca. 2900 m. Xizang [India (Darjeeling, Sikkim), Nepal].


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