陕西唐松草 shan xi tang song cao

Plants ca. 70 cm tall, pubescent. Stems simple, sulcate. Cauline leaf petiole ca. 1.5 cm; leaf blade 3- or 4-ternate, ca. 12 cm; petiolule pubescent, 1--5 mm; leaflet blade cuneate-obovate, broadly rhombic, or broadly ovate, 1.2--2.2 × 0.7--2 cm, papery, abaxially pubescent, base cuneate, rounded, or subcordate, margin 3-lobed; lobes entire or 2-toothed, apex rounded, obtuse, or acute; veins flat on both surfaces. Inflorescence paniculate, ca. 13 cm, densely flowered. Pedicel 2--4 mm, pubescent. Sepals 4, deciduous, elliptic, ca. 3 × 1.8 mm, pubescent abaxially. Stamens ca. 7 mm, glabrous; filament filiform; anther narrowly oblong, ca. 2 mm, apex mucronate. Carpels ca. 3; stigma narrowly triangular. Achenes sessile. Fl. Jul--Aug.

* Mountain slopes. SE Shaanxi (Xunyang Xian).

This species is similar to Thalictrum minus var. hypoleucum, but differs in being pubescent and having wingless stigmas.