Variation in armature across Prosopis s.l. and allies A stipular spines of Strombocarpa strombulifera B internodal prickles on shoots and branches of Indopiptadenia oudhensis which it shares with its sister group, Prosopis s.s. illustrated in C; C internodal prickles of Prosopis farcta D stipular spines of Xerocladia viridiramis which it shares with its sister group, the genus Strombocarpa illustrated in A; E axillary nodal spines of Neltuma juliflora F spinescent straight cylindrical shoots of the subaphyllous Neltuma kuntzei. Photos courtesy of Guillermo Debandi (A) (see https//www.inaturalist.org/taxa/78750-Prosopis-strombulifera/browse_photos), Dr. Omesh Bajpai and Dr. Lal Babu Chaudhary (B), Zeynel Cebeci (C) (see https//commons.wikimedia.org/wiki/FileProsopis_farcta_-_Syrian_mesquite_01), N. Dreber (D) (see http//www.southernafricanplants.com/), Colin Hughes (E, F).