Acacia macracantha Humb. & Bonpl. ex Willd.

Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part M), Order out of Chaos. Linnaean Plant Types and their Types, London: Linnaean Society of London in association with the Natural History Museum, pp. 651-689 : 677

Mimosa semispinosa Linnaeus , Species Plantarum 1: 522. 1753.

“Habitat in America.” RCN: 7691.

Type not designated.

Original material: Herb. Clifford: 208, Mimosa 6 (BM).

Current name: Acacia macracantha Humb. & Bonpl. ex Willd. ( Fabaceae : Mimosoideae ).

Note: The application of this name is uncertain. Barneby (in Mem. New York. Bot. Gard. 65: 777. 1991) treated it as a species incertae sedis and did not trace a type. He noted that if the name proved to apply to a true Mimosa , the armature and leaf-formula would fit M. distachya var. oligacantha (DC.) Barneby. A Clifford collection (BM), only rather doubtfully associated with the name, is not a Mimosa , but close to Acacia macracantha Humb. & Bonpl. ex Willd. , a very large and widely distributed complex in the neotropics (Rico, pers. comm.). Mimosa semispinosa appears to be a candidate for rejection.