Taxonomie : D'après Rome
et al. (
2024): "In the present treatment, we keep
P. amoena
L.K.Escobar [1994, montagne de Kaw],
P. fuchsiiflora
Hemsl. [1898, Demerara river] and
P. saulensis
[Feuillet 2002, Galbao] as distinct species, but it will be interesting
to study the variability of morphological characters and the genetic
links between these species as explained below in our comments."