Solanum retrorsum Elmer – Herbarium specimen collected in the Philippines in 1914 (Merrill 9665, K000195908) Photograph credit: © copyright of the Board of Trustees of the Royal Botanic Gardens, Kew.

 
 
  Part of: Aubriot X, Knapp S (2022) A revision of the “spiny solanums” of Tropical Asia (Solanum, the Leptostemonum Clade, Solanaceae). PhytoKeys 198: 1-270. https://doi.org/10.3897/phytokeys.198.79514