Key morphological features of the clade composed of Senegalia sect. Senegalia (A, C, D, F, G) and sect. Monacanthea s.s. (B, E, H). A prickles clustered at the nodes in Senegalia senegal Britton B internodal prickles in S. ataxacantha C paired prickles at the nodes and axillary, spicate inflorescences of Senegalia goetzei (Harms) Kyal. & Boatwr. D spicate inflorescence in racemes of Senegalia nigrescens (Oliv.) P.J.H. Hurter E spicate inflorescences of S. ataxacantha F tree habit of Senegalia polyacantha (Willd.) Seigler & Ebinger G treelet habit of Senegalia laeta (R. Br. ex Benth.) Seigler & Ebinger H lianescent shrub habit of S. ataxacantha. Photo credits: A Alex Dreyer B Sylvain Piry C, D Claude Boucher Chisale E Erik Koenen F Elke Faust G Marco Schmidt H Philippe Birnbaum A–D, F–H from African plants – A Photo Guide (www.africanplants.senckenberg.de) E from living collection Pretoria National Botanical Garden, South Africa.

 
 
  Part of: Terra V, Ringelberg JJ, Maslin B, Koenen EJM, Ebinger J, Seigler D, Hughes CE (2022) Dilemmas in generic delimitation of Senegalia and allies (Caesalpinioideae, mimosoid clade): how to reconcile phylogenomic evidence with morphology and taxonomy? In: Hughes CE, de Queiroz LP, Lewis GP (Eds) Advances in Legume Systematics 14. Classification of Caesalpinioideae Part 1: New generic delimitations. PhytoKeys 205: 261-278. https://doi.org/10.3897/phytokeys.205.79378