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

31. Viola nagasawae Makino & Hayata, J. Coll. Sci. Imp. Univ. Tokyo. 22: 30. 1906.

台北堇菜 tai bei jin cai

Herbs perennial, acaulescent, with slender stolon. Rhizome erect, brownish, slender. Stolon with clustered leaves at top. Leaves basal, rosulate; stipules subulate, ca. 7 mm, margin erose, long fimbriate; petiole ca. 3 cm, slender, sparsely spreading puberulous; leaf blade ovate, elliptic, triangular-ovate to lanceolate, 1-1.5 × 0.8-1 cm, abaxially glabrous or hairy, adaxially with sparse white stiff hairs, base shallowly cordate, margin 8-10-crenate and ciliate, apex obtuse. Flowers purplish, small; pedicels produced from axils of basal leaves and those of leaves on stolon, much exceeding leaves, 8-10 cm, slender, 2-bracteolate at middle; bracteoles subopposite, linear, 5-7 mm, minutely ciliate. Sepals linear-lanceolate, 4-5 mm, margin sparsely fimbriate-ciliate or glabrous, basal auricles short. Petals obovate, upper ones subequaling lateral ones, 9-11 × ca. 4.5 mm, lateral petals glabrous or bearded, anterior petal oblong, ca. 7.5 mm (spur included), apex acuminate; spur short, ca. 1.5 mm; spur of 2 anterior stamens oblong, ca. 1.5 mm, nearly as broad as anthers. Ovary ovoid, glabrous; styles nearly erect, slender at base; stigmas slightly 2-lobed, lobes narrow and slightly thick, slightly raised in central part, shortly beaked in front. Capsule ca. 5 mm.

● Grassy slopes; below 1100 m. Taiwan.

1 Leaf blade ovate or elliptic, apex obtuse, abaxially glabrous; sepals sparsely fimbriate-ciliate along margin; lateral petals beardless.   31a var. nagasawae
+ Leaf blades triangular-ovate to lanceolate, apex acute, both surfaces stiffly hairy; sepals sparsely ciliate or glabrous along margin; lateral petals bearded.   31b var. pricei


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