新竹菫蔡

Viola nagamiana Hashimoto in Ann. Tsukuba Bot. Gard. 6:1, fig. 1, 1987. syn. nov.

Perennial herb; rhizome horizontal to ascending, often elongate, bearing stems and leaves at apex. Stem up to 25 cm, ascending, rooting at ends and producing dense rosettes of leaves and floers. Leaves 2-4 cm long, 1.5-4 cm broad, cordate, cordate to deeply cordate at base, short acuminate or acute at apex, depressed crenate-serrate on margin, glabrous or sparsely pubescent on the upper surface, pale beneath, chartaceous; petioles 3-10 cm long, glabrous. Stipules c. 10 mm long, 1-2 mm broad, narrowly lanceolate, acuminate at apex, fimbriate-lacinate on margin, glabrous, fuscous, free. Flowers 10-16 mm across, pale violoet to almost white, with dark violet veins on the basal petal, yellowish green at base of every petal; peduncles 3-10 cm long, slender, equalling leaves. Sepals 3-6 mm long, 1-1.2 mm broad, narrowly lanceolate, acute at apex, entire, glabrous; appendages 1-2 mm long, dentate, glabrous. Petals obovate, basal shorter or equalling the others. rounded or obtuse at apex, laterals bearded; spurs 2-2.5 mm long, exceeding calycine appendages, cylindrical, obtuse. Styles 1.6-2 mm long, gently geniculate at base, somewhat thickened distally, minutely papillose at apex, anterior stigmatic openning. Capsules 4-6 mm long, globose, glabrous, peduncle prostrate when mature. Seeds ovoid, c. 1.8 mm long, with conspicuous elaisome. Chromosome number: n = 10.

Taoyuan : Ssuling-Paling, Wang 3528, 3544. Hsinchu : Mt. Yura, Y. Simada 2390c (Type of V. shinchikuensis, TAI!); Tikuto Mentoyu Y. Simada 2391b (TAIF), 2391c (Type of V. shinchikuensis, TAI!); Kwanwu, Wang 4905. Taichung : Wuling Farm, Wang 3894a; Wuling Farm-Hsinta Campus, Wang 3996. Nantou : Pilushi, Wang s.n. Apr. 13, 1985, T. Y. Yang s.n. Nov. 8, 1986; Tsuifeng, Hayata s.n. Apr. 20, 1916 (TAIF), Wang 5099; Tsuifeng-Meifeng, Wang 5101, 5102, T. Y. Yang 87; Hsinjenkang, Wang 3880, 5100; Tungpu-Dueikuan, Yang s.n. Mar. 29, 1986, Wang 4275, 4281, 4282, 4284; Dueikuan-Kwankao, Yang s.n. Oct. 22, 1986. Chiayi : Tozan, Ishizaki s.n. Jul. 3, 1924 (pro parte). Pingtung : Ali, Wang 3449, H. N. Yang 2050; Chiaokuolachih, Wang 3446; Wutai, I. S. Chen 1544, 1577 (pro parte), 1602 (pro parte).

Endemic.