狭序唐松草 xia xu tang song cao

Plants 40--80 cm tall, glabrous. Stems branched, sulcate. Leaves both basal and cauline; stipules membranous; petiole ca. 12 cm; leaf blade 4-ternate, ca. 15 cm; petiolule ca. 1.2 cm; leaflet blade cuneate-obovate, broadly rhombic, or orbicular, 0.8--2.2 × 0.8--3 cm, leathery, base broadly cuneate, rounded, or subcordate, apex entire or obtusely 3-lobed; veins flat on both surfaces. Inflorescence a racemelike monochasium, many flowered. Pedicel 1--5 mm. Sepals 4, early deciduous, white or greenish yellow, elliptic, 2.5--3.5 × 1--1.5 mm. Stamens 7--10; filament filiform proximally, clavate distally. Carpels 4 or 5(--8); style persistent, circinate, 1--2 mm. Achenes sessile; body broadly ovoid, ca. 2.5 mm. Fl. Jun--Jul, fr. Aug--Sep.

* Forests, forest margins, slopes; 2300--3600 m. Sichuan, Xizang, Yunnan.