Only 1 genus and 4 species a in Sri Lanka, which are herbs.
N.aurantiaca (Dalz.) Kuntze [Ljnmqnthemum aurantiqcm Dalz]
N.hydrophylla (Lour.) Kuntze [Limnanthemum cristatum Griseb.] S:heen-ambala, heen-olu, kumudu
N.indica (L.) Kuntze [Limnanthemum indicum Griseb.] S:maha-ambala, olu
N.parviflora (Griseb.) Kuntze [Limnanthemum parvifolium Griseb.] S:bin olu