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Summary This paper proposes lectotypes for eighteen names in Graffenrieda, including both accepted names and names currently treated as synonyms but which will be reinstated in forthcoming systematic treatments of the genus.
The genus Pleiochiton has frequently been recognized by dubious characters and seldom treated in taxonomic and floristic surveys. Nevertheless, monophyly of the genus has been highly supported by recent molecular and morphological data, and it can be morphologically recognized by the epiphytic growth and succulent roots. Following the current circumscription, the genus has 12 species, all endemic...
Summary Taxonomic studies of Brazilian Meriania species (Merianieae – Melastomataceae) have identified taxonomic and nomenclatural gaps. The present work proposes one new synonym, M. sanchezii, for M. paniculata; one new neotypification of M. glabra; and five lectotypifications for M. calophylla, M. glabra var. parviflora (= M. glabra), M. paniculata, M. pergamentacea (= M. robusta), and M. urceolata...
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