《中国植物志》|| 桔梗科 CAMPANULACEAE ||党参组 Sect. Codonopsis ||大叶党参 Codonopsis affinis Hook.f. & Thomson

7．大叶党参（新拟）近缘党参（植物分类学报）图版8：1
Codonopsis affinis Hook. f. et Thoms., Journ. Linn. Soc. Bot. 2: 12. 1858; C. B. Cl. in Hook. f., Fl. Brit. Ind. 3: 431. 1881; Kom., Act. Hort. Petrop. 29 (1): 107. 1908; Chipp, Journ. Linn. Soc. Bot. 38: 389. 1908.
茎基具多数细小茎痕，长约8厘米。根常肥大呈纺锤状而有分枝，通常较粗大，表面灰黄色，近上部有细密环纹，而下部则疏生横长皮孔，细小时肉质，粗老时渐趋于木质。茎缠绕；长2米以上，直径3-4毫米，有多数分枝，黄绿色或绿色，表面近无毛或疏生白色刺毛。叶在主茎及侧枝上的互生，在小枝上的近于对生，叶柄长1-6厘米，被白色短刺毛，叶片卵形或卵状长圆形，长2.5-15厘米，宽1-9厘米，顶端短渐尖，基部深心形，浅心形或略圆钝，边微波状，或具浅钝圆锯齿，或近于全缘，上面绿色，疏生白色刺毛，下面灰绿色，密生稍长的白色刺毛，叶脉明显突出。花顶生或与叶片相对生，花梗长1-4厘米，有短细刺毛；花萼贴生至子房顶端，筒部半球状，有10条不甚明显的辐射脉，有短细刺毛，裂片远隔，狭矩圆形或狭披针形，长0.8-1.7厘米，宽2-3毫米，两面被白色茸毛，先端急尖或微钝，边缘波状，萼脉不显；花冠上位，阔钟状，长约2厘米，直径约2厘米，中下部黄绿色，上部紫红色，外侧先端有刺毛；浅裂，裂片三角形，花丝基部微扩大，花药椭圆形，全长约5毫米，无毛。蒴果下部半球状或略近于球状，上部圆锥状，直径1.5-5厘米，果喙长约4毫米。种子多数，椭圆状或卵状，无翼，细小，黄棕色，平滑，无光泽。花果期7-10月。
产我国西藏南部（聂拉木）。生于海拔2300-3200米间的山地林下。印度、尼泊尔和锡金也有分布。模式标本采自锡金。

《Flora of China》|| Campanulaceae || Codonopsis ||大叶党参 Codonopsis affinis

7. Codonopsis affinis J. D. Hooker & Thomson, J. Proc. Linn. Soc., Bot. 2: 12. 1857.

大叶党参 da ye dang shen

Roots much thickened, fusiform, branched. Stems twining, yellow-green or green, more than 2 m, branched, subglabrous or sparsely white hirsute. Leaves on main stems and major branches alternate, those on branchlets subopposite; petiole 1-6 cm, shortly white hirsute; blade abaxially gray-green, adaxially green, ovate or ovate-oblong, 2.5-15 × 1-9 cm, abaxially densely white hirsute, adaxially sparsely white hirsute, base deeply cordate to rounded, margin entire to shallowly crenate, apex shortly acuminate. Flowers solitary, terminal, or opposite leaves; pedicels 1-4 cm, hispidulous. Calyx tube adnate to whole ovary, semiglobose, obscurely 10-ribbed, hispidulous; lobes distant from each other, linear-oblong or linear-lanceolate, 8-17 × 2-3 mm, both surfaces white lanate, margin wavy, apex acute or ± obtuse; veins obscure. Corolla yellow-green at lower and middle parts, purple-red at upper part, broadly campanulate, ca. 2 × 2 cm, outside hirsute apically, shallowly 5-lobed; lobes triangular. Filaments slightly dilated at base; anthers ellipsoid, ca. 5 mm, glabrous. Capsule semiglobose or subglobose below, conical and rostrate above, 1.5-5 cm in diam., rostrum ca. 4 mm. Seeds numerous, yellow-brown, ellipsoid or ovoid, wingless, smooth. Fl. and fr. Jul-Oct.

Forests; 2300-3200 m. S Xizang (Nyalam) [Bhutan, N India, N Myanmar, Nepal].