foc
《中国植物志》英文修订版
Flora of China
  FOC Vol.23 (2010)              | Family List  Potamogetonaceae  PDF     |  eFloras.org Link Font:+ Big | - Small
   11. Potamogetonaceae  
眼子菜科   yan zi cai ke
  
Authors:Authors: Youhao Guo, Robert R. Haynes, C. Barre Hellquist & Zdenek Kaplan

  

Herbs, perennial or annual, in fresh to brackish water, totally submerged or with floating leaves. Rhizomes present or absent. Stems elongated or shortened, terete to compressed, rarely strongly compressed. Leaves alternate or basal, occasionally opposite or subopposite; stipules free from leaves or adnate to leaf base and sheathing stems. Inflorescence a capitate spike, terminal or axillary. Plants monoecious; flowers small, bisexual. Perianth bractlike, free, present or absent. Stamens (1-)4; anthers sessile, (1 or)2-celled, extrorse, longitudinally dehiscent. Carpels (1-)4, free; ovule solitary. Fruit drupaceous. Embryo curved; endosperm absent.

Three genera and ca. 85 species: cosmopolitan; two genera and 24 species in China.

Guo Youhao & Li Qingyi. 1992. Potamogetonaceae (excluding Halodule, Phyllospadix, Posidonia, Ruppia, Syringodium, Triglochin, and Zostera). In: Sun Xiangzhong, ed., Fl. Reipubl. Popularis Sin. 8: 40-83.

Guo Youhao & Li Qingyi. 1992. Potamogetonaceae (excluding Halodule, Phyllospadix, Posidonia, Ruppia, Syringodium, Triglochin, and Zostera). In: Sun Xiangzhong, ed., Fl. Reipubl. Popularis Sin. 8: 40-83.

  
1Submersed leaves with stipules free from leaf base, or if adnate then adnate portion less than 1/2 length of stipule; leaves submersed and floating or all submersed; submersed leaf blades translucent, not channeled, flattened; peduncle stiff, submersed or1  Potamogeton    眼子菜属
+Submersed leaves with stipules adnate to leaf blade for 2/3 or more length of stipule; leaves all submersed, blades opaque, channeled; peduncle lax, not projecting inflorescence above water surface.2  Stuckenia    蓖齿眼子菜属
   
   Lower Taxon
  • Potamogeton  Linnaeus  眼子菜属
  • Stuckenia  B?rner  蓖齿眼子菜属