Family – Alismataceae – 1 genus – 1 species in Sri Lanka
6.01. CALDESIA Pari.
C.oligococca (F. Muell.) Buchenau [Alisma oligococcum F. Muell.] var. echinata Hartog
6.02. LIMNOPHYTON Miq.
L.obtusifolium (L.) Miq. [Sagittaria obtusifolia L.]
Reference – A CHECK LIST OF THE FLOWERING PLANTS; Lilani Kumudini Senaratna, B.Sc. (Colombo) M.Phil. (OUSL), Department of Botany, The Open University of Sri Lanka, Nawala, Nugegoda. Published by National Science Foundation 47/5, Maitland, Place Colombo 7 SRI LANKA