Ammannia ramosior Linnaeus, Species Plantarum 1: 120. 1753.

"Habitat in Virginia. D. Gronovius." RCN: 987.

Lectotype (Fernald & Griscom in Rhodora 37: 169. 1935): Clayton 774 (BM-000051788; iso- LINN 156.2).

Current name: Rotala ramosior (L.) Koehne ( Lythraceae).