- Scientific Name: Thalictrum delavayi Franch.
- Ref: Bull. Soc. Bot. France. 33: 367. 1886
- English Common Name: Chinese meadow-rue, Yunnan meadow-rue
- Chinese Common Name: 偏翅唐松草 piānchì tángsōng∙cǎo, 马尾黄连 mǎwěi huánglián
- Japanese Common Name: オオシキンカラマツ [大紫錦唐松] ōshikinkaramatsu, ヘンシカラマツ [偏唐松] henshikaramatsu
- Family: Ranunculaceae
- Genus: Thalictrum
- Distribution: Forests, scrub, hills, grassy slopes, shady places, along streams, damp rocky ledges; 1800–3400 m. W Guizhou, W Sichuan, Xizang, Yunnan.
- Photo: 06/16/2014, Lijiang Alpine Botanical Garden, Yunnan
Plants 0.6--2 m tall, glabrous. Stems branched. Basal leaves withered at anthesis. Stipules semiorbicular, margin lobed or entire; petiole 1.4--8 cm; leaf blade 3- or 4-pinnate, ca. 40 cm; leaflet blade orbicular-ovate, obovate, or elliptic, 0.5--3 × 0.3--2(--2.5) cm, herbaceous, base rounded or cuneate, apex obtuse or acute, 3-lobed; lobes entire or 1--3-toothed; veins flat or raised abaxially. Inflorescence paniculate, 15--40 cm. Pedicel 8--25 mm. Sepals 4(or 5), purplish tinged, oblong or long elliptic to ovate or broadly so, 6--14 × 2.2--7 mm. Stamens many, 5--7 mm; filament filiform, dilated distally; anther oblong, 0.1--1.8 mm, apex mucronate, mucro 0.01--1.5 mm. Carpels 15--22; style short; stigma inconspicuous. Achene stipe erect, 1--3 mm; body obliquely obovoid, 5--8 × 2.5--3.2 mm; veins ca. 8. Fl. Jun--Sep. (Flora of China)