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pentachotoma Bremek. Ch****alia
perrieri Bremek. Ch****alia
petitiana Piesschaert Ch****alia
petrinensis Verdc. Ch****alia
pleuroneura (K.Schum.) O.Lachenaud...
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Systematic and
Phylogenetic Implications. S. Jansen, S. Dessein, F.
Piesschaert, E. Rbbrecht and E. Smets,
Annals of Botany, 2000,
volume 85, pages...
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taxonomic position of
Pagameopsis (Rubiaceae-Rubioideae).
Frederic Piesschaert,
Steven Jansen, Ivan Jaimes,
Elmar Robbrecht and Erik Smets, Brittonia...