Rhizome creeping, stolonlike. Stem branched, 70--100 cm, glabrous. Leaves lanceolate or ovate-oblong, 5--8 × 1.5--2.5 cm, base deeply cordate, amplexicaul, apex caudate-acuminate. Cymes axillary, laxly several flowered or reduced to a solitary flower; pedicels 3--5 cm, densely hirsute. Tepals white, usually with purple spots, oblong-ovate, 2--2.5 cm, glabrous. Stamens subequaling tepals; filaments slender. Ovary glabrous. Style ca. 5 mm. Capsule 2--2.5 cm. Seeds brown, minute. Fl. and fr. May--Oct.

No specimens have been seen by the present authors.

* Moist and shaded places; 800--1600m. E and N Taiwan.