紫斑蝴蝶草 zi ban hu die cao

Herbs, 25-40 cm tall, villous. Stems erect, stout. Petiole 1-1.5 cm; leaf blade broadly ovate to ovate-triangular, 3-5 X 2.5-4 cm, white and sparsely hairy, base abruptly constricted and broadly cuneate, margin coarsely triangular acute-serrate. Racemes terminal; bracts oblong-ovate, 5-10 mm, somewhat enveloping pedicel, margin ciliate, apex acuminate. Pedicel ca. 1 cm, to 2 cm in fruit. Calyx obovate-fusiform, ca. 12 X 5-7 mm, ca. 1.8 X 0.8 cm in fruit, 5-winged; wings unequal in width, 2 wider wings to 2 mm; lobes 5, short, more evident in fruit, subequal, ovate-triangular, apex acuminate. Corolla yellow, 1.5-1.8 cm; lower lip lobes rotund, ca. 3 X 3.5 mm, middle lobe apically orange-colored, lateral lobes distally blue; upper lip ca. 4 X 5 mm, emarginate. Anterior stamens appendages toothlike. Capsule cylindric, 9-11 X 2-3 mm, compressed, 4-furrowed. Fl. and fr. Jul-Oct.

* Mountain slopes, sparse forests, along streams; low elevations. Fujian, Guangdong, Hunan, Jiangxi.