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New taxa of Impatiens (Balsaminaceae) from Madagascar VI. Impatiens otto-eleonorae, a new species from Masoala Peninsula, and notes on the taxonomic relationships of Impatiens firmula and I. hildebrandtii

. Phytotaxa 217 (2): 155–163. https://doi.org/10.11646/phytotaxa.217.2.5