Neltuma articulata (S. Watson) Britton & Rose, in N.L. Britton & al. (eds.), N. Amer. Fl. 23: 187. 1928.

Prosopis articulata S. Watson, Proc. Amer. Acad. Arts 24: 48. 1889.

Prosopis juliflora var. articulata (S. Watson) Wiggins, Contr. Dudley Herb. 4: 17. 1950.

Neltuma pazensis Britton & Rose, in N.L. Britton & al. (eds.), N. Amer. Fl. 23: 187. 1928.

Prosopis pazensis (Britton & Rose) Wiggins, Contr. Dudley Herb. 4: 18. 1950.

Type material.

Mexico. Sonora, Guaymas, E. Palmer 197 (lectotype designated by Palacios (2006): GH [GH00003478]; isolectotypes: BM [BM000952297, BM000952297], K [K000478261], NY [NY00005127], US [US00000983, US00930831], YU [YU001419]).