Notes:
Pandanus petrosus was originally described by Martelli on immature type material (Martelli & Pichi-Sermolli, 1951) comprising leaves and immature drupes, and an amended description of the same material with additional measurements and observations
was provided by Huynh (2000). A careful study of the specimens at FI and P has enabled us to conclude that Martelli’s type material includes two different species. While the leaf material cannot be identifi ed definitely with any known species, we believe that the drupes probably belong to P. namakiensis Martelli. We have therefore lectotypified P. petrosus on the drupes, and provisionally place this name in synonymy under the better known species P. namakiensis (in Martelli & Pichi-Sermolli, 1951: 155)(see Callmander & al., 2011 for more details).
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