汉城细辛Asarum sieboldii Miq. f. seoulense (Nakai) C.Y.Cheng et C.S.Yang

科名：马兜铃科 Aristolochiaceae

属名：细辛属 Asarum

《中国植物志》第24卷176页
  l0b. 汉城细辛（变型）
  Asarum sieboldii Miq f. seoulense (Nakai) C. Y. Cheng et C. S. Yang in Journ. Arn. Arb. 64: 577. 1983. ——A. sieboldii Miq. var. seoulense Nakai in Fedde, Repert. Sp. Nov. 13: 267. 1914. et in Bot. Mag. Tokyo 28: 519. 1914;东北药用植物志54. 图60. 1959. ——Asiasarum heterotropoides Fr. Schmidt var. seoulense (Nakai) Maekawa. in Nakai Fl. Sylv. Kor. 21: 20. 1936.
  本变型叶片背面有密生短毛，叶柄被疏毛。
  产于辽宁东南部。生于林下及山沟湿地。朝鲜也有分布。模式标本采自朝鲜汉城。
  本种全草入药。

《Flora of China》 Vol. 5 (2003)
Asarum sieboldii  Miquel
汉城细辛   han cheng xi xin
Asarum sieboldii f. seoulense (Nakai) C. Y. Chang & C. S. Yang; A. sieboldii var. seoulense Nakai; Asiasarum heterotropoides (F. Schmidt) F. Maekwa var. seoulense (Nakai) F. Maekawa; A. sieboldii (Miquel) F. Maekawa.
Herbs. Rhizomes vertical or horizontal, 2-3 mm in diam., internodes 1-2 cm. Leaves paired; petiole 8-18 cm, glabrous or pubescent; leaf blade uniformly colored, cordate or ovate-cordate, 4-11 × 4.5-13.5 cm, abaxial surface pubescent only along veins or densely pubescent, adaxial surface sparsely puberulent, base deeply cordate, lateral lobes 1.5-4 × 2-2.5 cm, apex shortly acuminate or acute; cataphylls reniform-rounded, ca. 1.3 × 1.3 cm. Peduncle declinate, 2-4 cm. Calyx dark purple, urceolate to campanulate, 1-1.5 × 1-1.5 cm; sepals connate beyond attachment to ovary, abaxially glabrous; tube subglobose, 6-8 × 1-1.5 cm, adaxially longitudinally ribbed; lobes erect or spreading, triangular-ovate, ca. 0.7 × 1 cm. Stamens 12; filaments slightly longer than anthers; connectives shortly extended beyond anthers, awl-shaped. Ovary superior. Styles free, short, apex shallowly 2-cleft; stigmas lateral. Fl. Apr-May.
Forests, moist valleys. Liaoning [Korea].