foc
《中国植物志》英文修订版
Flora of China
  FOC Vol.23 (2010)              | Family List  Cymodoceaceae  PDF     |  eFloras.org Link Font:+ Big | - Small
   15. Cymodoceaceae  
丝粉藻科   si fen zao ke
  
Authors:Authors: Youhao Guo, Robert R. Haynes & C. Barre Hellquist

  

Plants submerged in salt water. Rhizomes creeping, usually slender. Stems shortened. Leaves sessile, alternate, subopposite, or crowded at nodes, linear, with conspicuous midvein, sheathing at base. Plants dioecious. Flowers minute, unisexual, solitary or in cymes. Male flowers pedunculate; perianth of 3 small scales or absent; stamens 1-3; anthers connate, sessile, longitudinally dehiscent; pollen grains threadlike. Female flowers sessile; perianth absent or cupular or of 3 segments; carpels 2, free; style simple or divided into 2(-4) filiform stigmas; ovule 1, pendulous. Fruitlet achene- or nutlike. Seeds without endosperm.

Four genera and 16-20 species: tropical and subtropical regions worldwide; three genera and four species in China.

Guo Youhao & Li Qingyi. 1992. Halodule and Syringodium. In: Sun Xiangzhong, ed., Fl. Reipubl. Popularis Sin. 8: 96-102; Zhou Lingyun, You Jun & Zhong Xiongwen. 1992. Cymodocea. In: Sun Xiangzhong, ed., Fl. Reipubl. Popularis Sin. 8: 107.

Guo Youhao & Li Qingyi. 1992. Halodule and Syringodium. In: Sun Xiangzhong, ed., Fl. Reipubl. Popularis Sin. 8: 96-102; Zhou Lingyun, You Jun & Zhong Xiongwen. 1992. Cymodocea. In: Sun Xiangzhong, ed., Fl. Reipubl. Popularis Sin. 8: 107.

  
1Flowers in cymes; leaves subulate-terete.3  Syringodium    针叶藻属
+Flowers solitary; leaves linear, flattened(2)
   
2(1)Styles simple; anthers attached at different levels; leaves 1-4, alternate, 3-veined.2  Halodule    二药藻属
+Styles divided into 2 filiform stigmas; anthers attached at same height on stalk; leaves 2-7 together on short erect shoots, 7-17-veined.1  Cymodocea    丝粉藻属
   
   Lower Taxon
  • Cymodocea  K. D. Koenig  丝粉藻属
  • Halodule  Endlicher  二药藻属
  • Syringodium  Kützing in Hohenacker  针叶藻属