Lectotypification of the taxa of Adolpho Ducke from the Brazilian Amazon Author Leal, Eduardo Da Silva Jardim Botânico do Rio de Janeiro, Pacheco Leão 915, 22460 - 030, Rio de Janeiro, Rio de Janeiro, Brazil * Corresponding author: eduardoleal @ jbrj. gov. br Author Costa, Denise Pinheiro Da Jardim Botânico do Rio de Janeiro, Pacheco Leão 915, 22460 - 030, Rio de Janeiro, Rio de Janeiro, Brazil * Corresponding author: eduardoleal @ jbrj. gov. br Author Forzza, Rafaela Campostrini Jardim Botânico do Rio de Janeiro, Pacheco Leão 915, 22460 - 030, Rio de Janeiro, Rio de Janeiro, Brazil * Corresponding author: eduardoleal @ jbrj. gov. br text Phytotaxa 2010 2010-12-06 13 49 55 http://biotaxa.org/Phytotaxa/article/view/phytotaxa.13.1.4 journal article 6062 10.11646/phytotaxa.13.1.4 e135da9b-6edb-4737-8316-c65f4c3f4cf8 1179-3163 4778674 Guatteria scandens Ducke (1925: 10) (Annonaceae) . Lectotype (designated here):—BRAZIL. Pará: Breves, Macujubinzinho, 28 September 1919 , A. Ducke HJBR 11379 (RB 2 sheets; photo F) . Syntype: A. Ducke HJBR 17874 (MO, RB, S). Fries (1939: 483) indicated the specimen A. Ducke HJBR 17874 as “Typus speciei” of G. scandens. However, the sheet with this number comprises two specimens with distinct dates (10 November 1922, fruit black, and 10 May 1923, flower green). However this cannot be treated as a single specimen, as its parts were collected at different times (Art. 8.2 of the ICNB, McNeill et al. 2006); consequently Fries’s statement does not constitute an effective lectotypification, even as a first stage lectotypification. We have selected as lectotype the other specimen cited in the protologue by Ducke (1925).