Flora of China
  FOC Vol.23 (2010)              | Family List  Alismataceae  PDF Caldesia  PDF   | Link Font:+ Big | - Small
   3. Caldesia  Parlatore Fl. Ital. 3: 598. 1860.
泽薹草属   ze tai cao shu


Herbs, aquatic, perennial, rhizomatous. Leaves all basal, aerial, floating, or submerged, ovate to elliptic; floating leaves deep green, large; aerial leaves subleathery, with erect petiole; submerged leaves usually smaller. Inflorescences paniculate or racemose, much branched; branches whorled, each whorl with 3-6 branches; bracts lanceolate. Flowers pedicellate, verticillate, bisexual. Petals usually larger than sepals. Stamens 6-12. Carpels few to numerous in a single whorl, free, each with 1 ovule. Fruitlets drupaceous, with woody endocarp and spongy exocarp, swollen or slightly compressed, with a short beak.

About three species: Africa, Asia, Australia, Europe; two species in China.

1Leaves longer than broad, apex obtuse, not ribbed, base deeply cordate; stamens 6.1  C. parnassifolia    泽薹草
+Leaves shorter than broad, apex notched, ribbed, base not cordate; stamens 9-12.2  C. grandis    宽叶泽薹草
   Lower Taxon
  • Caldesia parnassifolia  (Bassi ex Linnaeus) Parlatore  泽薹草
  • Caldesia grandis  Samuelsson  宽叶泽薹草