Isopyrum multipeltatum Pampanini; Thalictrum multipeltatum (Pampanini) Pampanini; T. tripeltatum Maximowicz.

Plants 14--30 cm tall, glabrous. Stems simple or distally branched. Basal leaf petiole 5--12 cm; leaf blade 1--3-ternate, 8--25 cm; leaflets peltate, petiolule 15--25 mm, leaflet blade ovate, broadly so, broadly elliptic, or orbicular, 2--4 × 1.5--4 cm, herbaceous, apex obtuse to rounded, 3-lobed; lobes toothed at margin; veins flat on both surfaces. Cauline leaves 1--3. Inflorescence monochasial. Pedicel filiform, 3--20 mm. Sepals early deciduous, white, ovate, ca. 3 mm. Stamens 4--6 mm; filament base filiform, apex oblanceolate, broader than anther; anther elliptic, ca. 0.6 mm. Carpels 5--12(--16). Achene stipe slender, ca. 1.5 mm; body falcate, ca. 4.5 mm; veins ca. 8, weak. Fl. May--Jul.

* Forests, scrub, damp rocky ledges; 600--1900 m. Guizhou, Hubei, Liaoning, Shanxi, Sichuan, Yunnan, Zhejiang.