Rubiaceae Juss.
Plectronia sect. Canthium (Lam.) K.Schum. , legitimate, scientific
Schumann, K.M. in Engler, H.G.A. & Prantl, K.A.E. (ed.) (July 1891), Rubiaceae. Die Naturlichen Pflanzenfamilien IV, 4(61-62): 92 [comb. et stat. nov.]
basionym: Canthium Lam. legitimate
  • Comment: Reference to basionym indirect via citation of Canthium Lam. as synonym under the generic entry on page 91.