唐松草 tang song cao

Thalictrum aquilegiifolium subsp. asiaticum (Nakai) Kitakawa; T. aquilegiifolium var. asiaticum Nakai; T. aquilegiifolium var. daisenense (Nakai) Emura; T. contortum Linnaeus; T. daisenense Nakai; T. rubellum Siebold & Zuccarini.Thalictrum aquilegiifolium subsp. asiaticum (Nakai) Kitakawa; T. aquilegiifolium var. asiaticum Nakai; T. aquilegiifolium var. daisenense (Nakai) Emura; T. contortum Linnaeus; T. daisenense Nakai; T. rubellum Siebold & Zuccarini.

Plants 0.6--1.5 m tall, glabrous. Stems branched, robust, ca. 1 cm in diam. Basal leaves withered at anthesis. Stipules membranous; petiole 4.5--8 cm; leaf blade 3- or 4-ternate, 10--30 cm; leaflet blade obovate or broadly orbicular, 1.5--2.5 × 1.2--3 cm, herbaceous, base rounded-cuneate or subcordate, apex rounded to almost obtuse; lobes 3, entire or 1- or 2-toothed; veins flat on both surfaces or slightly raised abaxially. Inflorescence umbel-like, many flowered. Pedicel 4--17 mm. Sepals early deciduous, white or abaxially purplish tinged, elliptic, 3--3.5 mm. Stamens many, 6--9 mm; filament base filiform, apex oblanceolate, slightly narrower or broader than anther; anther ca. 1.2 mm, apex obtuse. Carpels 6--8; style persistent, 0.3--0.5 mm. Achene stipe 3--5 mm; body obovoid, 4--7 mm, broadly winged. Fl. Jul.

Forests, forest margins, grassy slopes, meadows; 500--1800 m. Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Shandong, Shanxi, Zhejiang [Japan, Korea, Mongolia, Russia (Siberia)].

Thalictrum aquilegiifolium var. aquilegiifolium, which occurs in SW Asia (Turkey) and Europe, has pyriform achenes long stipitate at the base.