大苞乌头 da bao wu tou

Caudex unknown. Stem ca. 1 m tall, glabrous, apically long branched, with leaves equally arranged along stem. Middle cauline leaves shortly petiolate; petiole ca. 2 cm, glabrous; leaf blade pentagonal, ca. 8.5 × 10 cm, abaxially glabrous, adaxially sparsely appressed pubescent, 3-sect; central segment rhombic, apex acuminate, subpinnately parted; lateral segments obliquely flabellate, unequally 2-parted nearly to base. Inflorescence several flowered; rachis and pedicels glabrous; bracts leaflike. Proximal pedicels to 12.5 cm, distal ones 1--1.5 cm, glabrous, with 2 bracteoles below flower; bracteoles leaflike, 1--2 × 1.4--2.6 cm. Sepals purple-blue, abaxially glabrous; lower sepals 1.1--1.3 cm; lateral sepals ca. 1.4 cm; upper sepal high galeate, 2--2.5 cm high, shortly beaked, lower margin oblique upward, 1.5--1.6 cm. Petals glabrous; limb ca. 1.1 cm; lip ca. 3 mm, slightly concave; spur incurved, ca. 3.5 mm. Stamens glabrous; filaments entire. Carpels 3--5, densely brown pubescent. Fl. Jul.

Mountains. Heilongjiang (Yichun Shi), Jilin (Dunhua Xian) [Russia (Far East)].