2.6. Pontederia hastata L., Sp. Pl. 1: 288. 1753.

Monochoria hastata (L.) Solms, Monogr. Phan. 4: 523. 1883.

Carigola hastata (L.) Raf., Fl. Tellur. 2: 10. 1837.

Calcarunia hastata (L.) Raf., Med. Fl. 2: 106. 1830. Lectotype (designated by Horn and Haynes 1987). SRI LANKA. Herb. P. Hermann 2: 52, No. 129 (BM barcode BM000621681!).

Distribution.

Bangladesh, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, New Guinea, Philippines, Sri Lanka, Thailand and Vietnam.