Hydrolea spinosa Linnaeus, Species Plantarum, ed. 2, 1: 328. 1762.

"Habitat in America meridionali." RCN: 1850.

Neotype (Barrie in Jarvis & al., Regnum Veg. 127: 55. 1993): Venezuela. "Chama in paludosis", 1865, Moritz 1297 (BM-000648925).

Generitype of Hydrolea Linnaeus, nom. cons.

Current name: Hydrolea spinosa L. ( Hydrophyllaceae).

Note: Davenport (in Rhodora 90: 183. 1988) noted the absence of material in LINN. Barrie therefore designated a neotype.