foc
《中国植物志》英文修订版
Flora of China
  FOC Vol.6 (2001)              | Family List  Ranunculaceae  PDF Aconitum  PDF   |  eFloras.org Link Font:+ Big | - Small
   10. Aconitum  Linnaeus
乌头属   wu tou shu
  
Authors:Li Liangqian; Yuichi Kadota

  

Herbs perennial or pseudoannual, rarely annual, with taproots or 2 to several caudices. Stem erect or twining. Leaves simple or compound, cauline ones alternate, sometimes all basal, palmately divided, rarely undivided. Inflorescence usually racemose. Pedicel with 2 bracteoles. Flowers bisexual, zygomorphic. Sepals 5, petaloid, purple, blue, or yellow; lower sepals 2, narrowly lanceolate or oblong, small; lateral sepals 2, suborbicular; upper sepal falcate, navicular, galeate to cylindric. Petals 2, clawed; limb usually with lip and spur, secretory tissue usually at limb apex, rarely abaxial. Staminodes usually absent. Stamens numerous; anthers ellipsoid-globose. Carpels 3--5(--13); style short, persistent.

About 400 species: temperate regions of the N hemisphere; 211 species (166 endemic) in China.

  
1(2)Herbs annual, with taproots; sepals clawed; petaline lip flabellate (3. A. subgen. Gymnaconitum)211  A. gymnandrum    露蕊乌头
+Herbs perennial, with rhizomes or pseudoannual with caudices; sepals not or nearly clawless; petaline lip not flabellate.(2)
   
2(1)Herbs perennial, with rhizomes (1. A. subgen. Lycoctonum)(2)
+Herbs pseudoannual, with caudices (2. A. subgen. Aconitum)(1)
   
List of Keys
  • Key 1
  • Key 2
  • Key 3
  • Key 4
  • Key 5
  • Key 6
  •    List of lower taxa