Viola javanica

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Viola javanica

Description

Perennial; Leaves ½-2½ by ¾-3 cm, 1-1.6 times as broad as long, triangular-ovate, rarely subhastate, shallowly and rather broadly cordate at base, acute to obtuse or rounded, crenate or subden-tate, glabrous or sparsely pubescent on veins towards sinus, subcoriaceous, dark green. Stipules 5-10 by 1-2 mm, lanceolate, acute, fimbriate, glabrous, fuscous, free. Flowers 6-12 mm, purple with darker veins; Sepals 4-5½ by 1½-1.8 mm, ovate-lanceolate, acute, entire, glabrous or sparsely pubescent near base, green with scarious margin; Petals about 3 times as long as broad, oblong to obovate-oblanceolate; Capsule 5-9 mm, oblong, glabrous.

Distribution

Asia-Tropical, E. Java present, Mt Ardjuno present, MtJang present, MtTengger present
Malesia: E. Java (Mt Ardjuno, MtTengger&MtJang). .

Notes

Closely related to V. arcuata but readily distinguished from typical forms of that species by its subcoriaceous, strongly crenate, ovate leaves and its long-fimbriate stipules. Some forms of V. arcuata, particularly in drier habitats, approach V. javanica in these characters but the stigma has the rounded separate lobes of V. arcuata and not the posteriorally fused, flatter margin of V. javanica. There is a superficial resemblance to some forms of V. pilosa but in that species the style is scarcely clavate and the stigma is emarginate.

Citation

Ridl. 1935 – In: J. Bot.: 14
BACK. & BAKH.f. 1963 – In: Fl. Java: 195