The multi-layered, shredding bark characteristic of all species of the genus A P. multijuga Cajamarca, Peru B P. hieronymi cultivated at Zurich Botanical Garden C P. humboldtii Chimborazo, Ecuador D P. pepei La Paz, Bolivia E P. incana Papallacta, Ecuador F P. pauta Ecuador G P. sericea Colombia H P. canoi Junin, Peru. Photographs A, E E.G. Urquiaga F. B, C, F T.E. Boza E. D A. Fuentes G A. Möhl H H.R. Quispe.