(This whole page is a poor attempt of translation of the Illustrated Handbook for Medicinal Materials from Nature in Yunnan, mistakes are and will be made, sorry)
三分三 sān fēn sān
Anisodus acutangulus C.Y.Wu et C.Chen
Description from Flora of China
Plants 1-1.5 m tall, glabrous or glabrescent. Roots stout, yellow-brown, pale yellow within. Petiole 0.5-1(-1.5) cm; leaf blade ovate or elliptic, 8-15 × 3-6 cm, papery or submembranous, base cuneate or slightly decurrent, margin entire, sinuate, or sometimes 1-3-toothed, apex acuminate. Pedicel ca. 2 cm. Calyx 3-4.5 cm, with 10 erect veins, glabrous or sparsely pubescent abaxially, irregularly 4- or 5-lobed; lobes narrowly deltate, 2 (or 3) of which are longer and larger, 2-2.5 cm. Corolla pale yellow-green, sometimes purplish; lobes purplish, similar to calyx in shape, barely exceeding calyx to about twice as long, 2.5-3(-4) cm, pubescent, with a purple spot at base of tube abaxially. Stamens included, about half as long as corolla; anthers 5-5.6 mm. Fruiting pedicel to 7 cm, curved. Fruiting calyx 3.5-4.5 cm. Capsule nodding.
Grassy slopes, waste lands; 2800-3100 m. Sichuan, Yunnan
Bitter, acrid, warm. Very toxic.