Description from Flora of China
Conandron ramondioides var. taiwanensis Masamune.
Petiole (0.4-)4-19 cm, glabrous; leaf blade narrowly elliptic to suborbicular, (3-)18-24 X (2-)4.5-14.5 cm, glabrous or glandular puberulent near base, base sometimes oblique, decurrent into petiole wing, broadly cuneate to truncate or cordate, margin irregularly denticulate to dentate, teeth extending down petiole wing, apex acuminate, rarely acute; lateral veins 8-11 on each side of midrib. Cymes 3-23-flowered; peduncle (3-)9-15 cm, glabrescent; bracts linear to narrowly elliptic, 2-4(-10) mm, margin entire, rarely dentate. Calyx segments narrowly triangular to narrowly lanceolate, 3-7 mm. Corolla 1-1.8 cm in diam., outside glabrous; tube 2-5 mm; limb 5-lobed, lobes triangular-ovate, 6-8 X 3-6 mm. Stamens 5-7 mm. Pistil 5-7 (-9) mm, sparsely glandular. Style 3.5-7 mm. Capsule (5-)7-10 mm. Fl. Jun-Jul, fr. May-Oct.
Streamside rocks, rocky cliffs in forests; 600-1300 m. S Anhui, N Fujian, NE Jiangxi, Taiwan, Zhejiang [Japan].