《中国植物志》|| 毛茛科 RANUNCULACEAE ||显柱乌头系 Ser. Stylosa W. T. Wang ||亚东乌头 Aconitum spicatum Stapf

60．亚东乌头 图版38: 6-8；图版45: 8
Aconitum spicatum Stapf in Ann. Bot. Gard. Calc. 10 (2) : 165, pl. 106 et 107. 1905.
块根狭倒圆锥形，长达6.5厘米，粗达2厘米。茎高1-1.5米，疏被短柔毛，通常不分枝。茎下部叶在开花时枯萎。中部叶有稍长柄；叶片心状五角形，长约7厘米，宽约9.5厘米，三深裂至距基部约8毫米处，中央深裂片菱形，三裂，二回裂片有缺刻状小裂片，侧深裂片斜扇形，不等二裂，两面有短伏毛；叶柄长约3厘米。花序长6-15厘米；轴和花梗密被开展的淡黄色柔毛和短腺毛；花梗长2-8厘米，向上斜展；小苞片生花梗下部，狭线形，长约4毫米；萼片紫色，外面密被短柔毛，上萼片盔形或低盔形，高1.5-2厘米，自基部至喙长约1.7厘米，下缘稍凹，侧萼片长1.5-1.7厘米；花瓣的爪有疏柔毛，唇长约5毫米，微凹，距长约1.5毫米，稍向后弯曲；花丝有疏柔毛；心皮5，子房密被淡黄色柔毛。9月开花。
在我国产西藏南部亚东一带。生海拔4000米山坡灌丛中。在锡金也有分布。
块根有剧毒，可供药用，治风湿性关节炎等症（西藏常用中草药）。
《西藏常用中草药》图186是亚东乌头的图，可以参考，但在这书中拉丁名误定为Aconitum balfourii Stapf。

《Flora of China》|| Ranunculaceae || Aconitum ||亚东乌头 Aconitum spicatum

76. Aconitum spicatum Stapf, Ann. Roy. Bot. Gard. (Calcutta). 10(2): 165. 1905.

亚东乌头 ya dong wu tou

Caudex narrowly obconical, to 6.5 cm, to 2 cm in diam. Stem 1--1.5 m tall, usually simple, sparsely pubescent. Proximal cauline leaves withered at anthesis, middle ones slightly long petiolate; petiole ca. 3 cm; leaf blade cordate-pentagonal, ca. 7 × 9.5 cm, both surfaces appressed pubescent, 3-parted; central lobe rhombic, 3-fid; lateral lobes obliquely flabellate, unequally 2-fid. Inflorescence 6--15 cm, many flowered; rachis and pedicels densely spreading yellowish pubescent and shortly glandular pubescent; bracts leaflike or lanceolate-linear to linear. Pedicels 2--8 cm, oblique upward, proximally with 2 bracteoles; bracteoles narrowly linear, ca. 4 mm. Sepals purple, abaxially densely pubescent; lower sepals ca. 1.6 cm; lateral sepals 1.5--1.7 cm; upper sepal galeate or lower galeate, 1.5--2 cm high, ca. 1.7 cm from base to beak, lower margin slightly concave. Petaline claw sparsely pubescent; lip ca. 5 mm, slightly concave; spur slightly incurved, ca. 1.5 mm. Stamens sparsely pubescent; filaments entire. Carpels 5, densely yellowish pubescent. Fl. Sep. 2n = 32.

Scrub; ca. 4000 m. S Xizang [Bhutan, Nepal, Sikkim].