Volume 14 > Part 1 > Year 2018 > Page 176 > Violaceae > Viola

3. Viola diffusa Ging.wfo-0001145179

in DC., Prodr. 1: 298. 1824; Hook.f. & Thomson in Hook.f., Fl. Brit. India 1: 183. 1872; Boissieu, Fl. Indo-Chine [P.H.Lecomte et al.] 1: 208. 1909; W.Becker, Beih. Bot. Centralbl., Abt. 2, 40: 114. 1923; Craib, Fl. Siam. 1: 87. 1925; Gagnep. in Humbert, Fl. Indo-Chine Suppl. 1: 184. 1939; M.Jacobs & D.M.Moore in Steenis, Fl. Males., Ser. I, Spermat. 7: 202, fig. 8: 4. 1971; H.Hara in H.Hara & L.H.J.Williams, Enum. Flow. Pl. Nepal 2: 47. 1979; S.P.Banerjee & Pramanik, Fasc. Fl. India 12: 20, fig. 21. 1983; Grierson in Grierson & D.G.Long, Fl. Bhutan 2(1): 224. 1991; S.P.Banerjee & Pramanik in B.D.Sharma & N.P.Balakr., Fl. India 2: 361, fig. 67h. 1993; Y.S.Chen et al. in C.Y. Wu et al., Fl. China 13: 86. 2007.

Accepted Name : This is currently accepted.

Description : Stoloniferous perennial herbs, producing dense rosettes of leaves, pubescent. Stipules linear-lanceolate, 5–9 by 0.75–1 mm, dentate to fimbriate, glabrous. Leaves elliptic, ovate to suborbicular, 1.2–4.5 by 1.2–3 cm, pubescent; apex rounded; margin crenate, ciliate; base cuneate, subtruncate to subcordate, attenuate onto the petiole; petioles 1.5–4.5 cm long, distinctly winged, sparsely pubescent, glabrescent. Flowers: pedicels 1.5–7 cm long, sparsely hairy, glabrescent; bracteoles at the middle or in the upper half; sepals linear-lanceolate, 3–6 by 0.5–1 mm, entire, sparsely hairy, glabrescent; appendage ca 0.5 mm long, rounded; petals white or pale blue, with dark blue veins, oblanceolate to narrowly obovate, 8–10 by 3–5 mm; lateral petals not bearded; spur 0.5–1 mm long, cylindrical, obtuse, equaling or exceeding calycine appendage; style ca 1.5 mm long, geniculate at base, clavate at apex, with 2 stigmatic lobes. Fruits oblong to ellipsoid, 4–6 mm long, glabrous. Seeds ellipsoid, ca 0.5 mm long, brown.

Thailand : NORTHERN: Chiang Mai (Doi Inthanon NP, Doi Ang Khang), Nan (Doi Phu Kha NP, Phu Huat).

Distribution : Himalayas (type from Nepal), India, China, Japan, Taiwan, Myanmar, Laos, Vietnam, the Philippines.

Ecology : Hill evergreen forests, in shade, 1,300–1,800 m alt. Flowering and fruiting: September–January.