Viola confertifolia Chang

Herbs perennial. Rhizome erect, ca. 3.5 cm, ca. 5 mm in diam., densely noded, with numerous fibrous roots. Stems 1-3, erect, to 11 cm tall, 2.5-3 mm in diam., glabrous, conspicuously striate, leafless in middle and lower parts. Basal leaves few or withered; stipules conspicuous, membranous, margin remotely dentate; petiole 5-7 cm, slender, very narrowly winged; leaf blade reniform, abaxially glabrous except along veins, adaxially sparsely puberulous. Upper leaves clustered at apex of stem; stipules ovate, 4-5 mm, herbaceous, margin remotely dentate or subentire; petiole ca. 1.5 cm; leaf blade reniform, ca. 1.5 × 2.5-4 cm, ± fleshy, both surfaces sparsely puberulous, margin obtusely serrate, apex usually obtuse, rarely mucronate. Flowers few, yellow, long pedicellate; pedicels linear, 2-3.5 cm, not bracteolate. Sepals linear, ca. 5 mm, 3-veined, margin subentire, basal auricles short. Petals obovate-oblong, glabrous, upper ones ca. 7.5 × 2.5 mm, lateral ones and anterior one ca. 8 × 4 mm; spur saccate, ca. 1.5 mm; spur of anterior stamens short. Ovary ovoid-globose, ca. 2 mm, glabrous; styles ca. 1 mm, base conspicuously geniculate, 2-lobed in upper part, lobes narrow and thick. Fl. Jul, fr. Sep.

NW Yunnan.

● Moist places in mountain ravines; 2800-3200 m.

Viola biflora Linnaeus var. platyphylla Franchet.

Viola confertifolia là một loài thực vật có hoa trong họ Hoa tím. Loài này được Chang miêu tả khoa học đầu tiên năm 1949.

密叶堇菜（学名：Viola confertifolia）为堇菜科堇菜属下的一个种。