Abstract
Nymphoides indica (L.) O. Kuntze (Menyanthaceae) is a perennial, floating-leaved, heterostylous, aquatic plant. In this paper the dimorphism of the flowers including differences in the distance between staminate and carpellate parts and differences in pollen size between long-styled and short-styled floral morphs is documented. Seed set was observed only in intermorph pollinations. Nymphoides indica was confirmed to be heterostylous, herkogamous and self-incompatible.
