[1]
Liede-Schumann, S. and Keller, H.A. 2020.

New combinations in Ruehssia for the South American species of Marsdenia (Apocynaceae-Asclepiadoideae)

. Phytotaxa. 471, 3 (Nov. 2020), 283–289. DOI:https://doi.org/10.11646/phytotaxa.471.3.10.