Distribution maps. A Exallosperma longiflora B Helictosperma malacophylla C H. poissoniana D Pseudocoptosperma menabense E Tulearia splendida F T. capsaintemariensis.

 
 
  Part of: De Block P, Rakotonasolo F, Ntore S, Razafimandimbison SG, Janssens S (2018) Four new endemic genera of Rubiaceae (Pavetteae) from Madagascar represent multiple radiations into drylands. PhytoKeys 99: 1-66. https://doi.org/10.3897/phytokeys.99.23713