中文名（Chinese Name）：细茎橐吾
学名（Scientific Name）：Ligularia hookeri (C. B. Clarke) Hand.-Mazz.
英文名（English Common Name）：
别名（Chinese Common Name）：太白紫菀
异名（Synonym）：Cremanthodium hookeri C. B. Clarke  Senecio saccoflabellatus H. Lév.  Senecio nimborum Franch.  Senecio sikkimensis Franch.  Senecio feddei H. Lév.  Senecio ficariifolius H. Lév. et Vaniot  Senecio cacaliaefolius var. atkinsonii Diels  Senecillis hookeri (C.B.Clarke) Kitam.
科属（Family & Genus）：菊科（Compositae）橐吾属
形态特征（Description）：多年生草本。根肉质，细而多。茎直立，细瘦，高17-40厘米，上部被白色蛛丝状柔毛和有节短柔毛，下部光滑，基部直径1.5-2毫米。丛生叶与茎下部叶具柄，柄纤细，长5-10厘米，光滑，基部鞘状，叶片心状箭形或肾形，长0.7-2.4厘米，宽1.5-5.5厘米，先端圆形，边缘具三角状齿或大齿，齿端具软骨质小尖头，齿间被有节短柔毛，基部弯缺宽，长为叶片的1/3至1/2，两侧裂片长圆形，外展或不叉开，两面光滑，叶脉掌状，网脉在下面明显；茎中部叶1个，具短柄，鞘略膨大，长1.5-2.5厘米，光滑，叶片肾形与下部者近等大；最上部叶1枚，苞片状，舟形，长达2.5厘米，先端具齿。头状花序辐射状，单生或2-7（16），排列成总状花序；苞片狭披针形；花序梗细瘦，长达3.5厘米，被与茎上部一样的毛；小苞片丝状；总苞钟形或宽钟形，长8-11毫米，宽6-8（10)毫米，总苞片8-10，2层，长圆形，宽至3毫米，先端急尖，背部光滑，内层具宽膜质边缘。舌状花黄色，舌片线形，长．10-15毫米，宽1.5-2毫米，先端急尖，管部长3-5毫米；管状花多数，长7-8毫米，管部长3.5-4毫米，冠毛褐色或淡褐色与花冠近等长。瘦果狭圆柱形，褐色，长5-5.5毫，米，光滑。花果期5-9月。
分布（Distribution）：产西藏、云南、四川及陕西，生于海拔3000-4200米的山坡、灌丛、林中、水边及高山草地。尼泊尔、印度及不丹也有。
用途（Use）：FOC Vol. 20-21 Page 381, 407
Ligularia hookeri (C. B. Clarke) Handel-Mazzetti, Bot. Jahrb. Syst. 69: 127. 1938.
细茎橐吾 xi jing tuo wu| Asteraceae  | Ligularia
Cremanthodium hookeri C. B. Clarke, Compos. Ind. 169. 1876; C. hookeri f. angustiligulatum R. D. Good; C. hookeri f. irregulare R. D. Good; C. hookeri subsp. polycephalum R. D. Good; C. hookeri f. regulare R. D. Good; Ligularia evaginata C. C. Chang; L. hookeri var. polycephala (R. D. Good) Handel-Mazzetti; Senecio calthifolius J. D. Hooker (1881), not (Maximowicz) Maximowicz (1871); S. feddei H. Léveillé; S. ficariifolius H. Léveillé & Vaniot; S. nimborum Franchet; S. saccosoflabellatus H. Léveillé; S. sikkimensis Franchet.
Stem erect, 17-40 cm tall, slender, 1.5-2 mm in diam. at base, proximally glabrous, distally white arachnoid-puberulent and shortly pilose. Basal leaves petiolate; petiole 5-10 cm, slender, glabrous, base sheathed; leaf blade cordate-sagittate or reniform, 7-24 × 15-55 mm, glabrous, palmately veined, abaxially with conspicuous reticulate veins, margin triangularly or coarsely dentate, between teeth shortly pilose, apex rounded; sinus 1/3-1/2 as long as leaf blade, broad; basal lobes oblong, divergent or not. Middle stem leaf solitary, shortly petiolate; sheath slightly enlarged, 1.5-2.5 cm, glabrous; leaf blade reniform, as large as basal leaves. Distalmost stem leaf solitary, bracteal, cymbiform, to 2.5 cm, margin dentate. Capitula solitary or 2-7(-16), in raceme; leaflike bracts narrowly lanceolate; peduncles to 3.5 cm, slender, arachnoid-puberulent and shortly pilose; supplementary bracts filiform. Involucre campanulate or broadly campanulate, 8-11 × 6-8(-10) mm, outside glabrous; phyllaries 8-10, in 2 rows, oblong, to 3 mm wide, apex acute; inner phyllaries broadly membranous at margin. Ray florets yellow; lamina linear, 1-1.5 cm × 1.5-2 mm, apex acute; tube 3-5 mm. Tubular florets numerous, 7-8 mm; tube 3.5-4 mm. Achenes brown, cylindric, 4.5-6 mm. Pappus brown or pale brown, as long as tubular corolla. Fl. and fr. May-Sep. 2n = 58.
Grassy slopes, scrub, forest understories, stream banks, alpine meadows; 3000-4500 m. Shaanxi (Taibai Shan), Sichuan, Xizang, NW Yunnan [Bhutan, India (Sikkim), Nepal].
（责任编辑：徐晔春）