Lectotypes are designated for Amanoa caribaea Krug & Urban and A. guianensis Aublet; presumed syntypes of the latter taxon are shown to be heterogeneous by inclusion of a previously unrecognized species. Four new species of Amanoa are described: A. congesta from French Guiana and northeastern Brazil; A. gracillima from Manaus, Brazil; A. nanayensis from Amazonian Peru and adjacent Colombia and Brazil; and A. neglecta from French Guiana and Surinam. Amanoa sinuosa is proposed as a new name for the later homonym A. robusta Leal. A key to the 13 neotropical species is presented.
Copyright © 1990, Springer. This article first appeared in Brittonia: 42:4 (1990), 260-270.
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Hayden, W. John. "Notes on Neotropical Amanoa (Euphorbiaceae)." Brittonia 42, no. 4 (October 1990): 260-70. doi: 10.2307/2806814.