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Some important semiaquatic medicinal plants. (a): Ceratophyllum demersum. (b): Eleocharis dulcis. (c): Limnophila aromatica. (e): Marsilea minuta. (d): Ludwigia adscendens. (f): Nymphaea pubescens. (g): Rotala rotundifolia. (h): Ageratum conyzoides. (i): Ammannia baccifera. (j): Eclipta prostrate. (l): Hygrophila schulli. (k): Heliotropium indicum. (m): Spilanthes calva Candolle. (n): Vetiveria zizanoides.
