紫花地丁

Perennial herb; rhizome erect to ascending, rather stout, bearing dark brown roots below and rosette of leaves and flowers at apex, acaulescent. Leaves usually linear-lanceolate or oblong, 3-8 cm long, 0.5-1.6 cm broad, with cuneate base during the flowering period, and become triangular-lanceolate, 3-11 cm long, 1-2.5 cm broad, with truncate base and more or less enlarged basal lobes after flowering period, acute or obtuse at apex, shallowly and distantly crenate on margin, sometimes dentate on basal lobes, usually long-decurrent on petiole, glabrous or puberulent on both surfaces, chartaceous to subcoriaceous; petioles 6-15 cm long, glabrous or pubescent. Stipules 3-8 mm long, 0.5-1mm broad, lanceolate, acuminate, entire or sparsely denticulate to ciliate, glabrous, adnate to petiole to 3/4 length. Flowers 15-25 mm across, usually dark purple, sometimes light violet or white; peduncles 8-25 cm long, equalling or exceeding leaves, glabrous or pubescent. Sepals 3-6.5 mm long, 1-2 mm broad, ovate-lanceolate, acute to acuminate, entire, glabrous; appendages 1-1.5 mm long, rounded to squarish. Petals obovate to oblanceolate, the laterals bearded or rarely beardless, the basal emarginate or truncate at apex; spurs 3-5.5 mm long, 1.4-2.5 times as long as wide, cylindrical, rounded. Styles 2-2.5 mm long, geniculate at base,clavate distally, with prominent marginal lobes at apex, anterior stigmatic beak. Capsules 9-14 mm long, oblong or ellipsoid, glabrous. Seeds ovoid, 1.8 mm long. Chromosome number: n = 24.

Hsinchu : Kwanwu, Wang 4123, 4127. Taichung : Chika, Huang 7089, Wang 4356 ; Chika-369 Hostel Wang  4357, 4358, 4355; Chungyangchienshi-Nanhushi, Wang 3581; Wuling-Kuannshan, Kuoh 6992; Wuling-Hsinta Campus, Wang 3998; Taoshan-Wuling Farm, Wang 4108; Pingkuoshan, Tang s.n. May 9, 1986; Yoboran, Kano s.n. Jul. 19, 1931; Malikoan, Sasaki s.n. Oct. 10, 1930. Nantou : Chihyuanshanchuang, Wang 2615, 3075, 3127, 4130, 4131, Tang 1292, S. H. Lin 23; Yunhai-Tunyuan, Fukuyama 4402, 4404, 4414; Chilaitzunanfeng, Sasaki s.n. Aug. 24, 1929; Kunyang-Yuanfeng, Wang 3418, 5096; Hsinjenkang, Wang 3876, 5098; Yuanfeng, Wang 5097; Dueikuan-Kwankao, Yang s.n. Oct. 22, 1986; Kwankao, Wang 4287, 4296. Chiayi : Alishan, Sasaki s.n. Oct. 1928, Mori 3503 (TAIF); Tozan, Ishizaki s.n. Jun. 3, 1924 (Type of Viola oblongo-sagitata form. Ishizakii, TAI!); Mt. Niitaka, Kawakami & Mori s.n. Oct. 15, 1905 (TAIF). Kaohsiung : Tienchih, Yang s.n. Apr. 3, 1988. Ilan: Nanhutashan, Sasaki s.n. Oct. 1928; Pass Pianan, Pingyenshan, S. Suzuki s.n. Oct. 24, 1928; 710 logging tract, Yang s.n. Mar. 4, 1987. Hualien : Chingshuishan, Liao s.n. Apr. 5, 1978 (NTUF); Tayuling-Pilu, Lin s.n. Jun 21, 1983 (TAIF); Tayuling-Tzuen, S. F. Huang 175, Tang 92; Tayuling, Kuoh, Chuma & Chang 8554; Tayuling-Konankuan, Wang 4304, 4305, 4306, Hsu & Kuoh 7121; Hohuanshan, Ou & Kao 9141, Tang s.n.Oct. 18, 1985, Ying 634 (NTUF), 637 (NTUF).

Kuriles, Japan, Korea, Mandshuria, China.