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15 December 2016 Lectotypification of Adiantopsis alata (Pteridaceae) and Descriptions of New Palmate Species in the Guiana Shield
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Abstract

Adiantopsis alata was described by Prantl in 1883 and was distinguished from A. radiata based on the presence of large adaxial carinae along the stipes. Morphological and molecular analyses of specimens meeting this general description reveal four distinct species, with one endemic to eastern Brazil and three others restricted to the Guiana Shield. The syntypes for A. alata represent two different species, one from Brazil and the other from Guyana. Here, we designate a Brazilian syntype as the lectotype for A. alata and describe and illustrate three new palmate species from the Guiana Shield with adaxial carinae along their stipes: A. aurea, A. hickeyi, and A. scalariformis. A distribution map for the new species and a key to all ten palmate members of Adiantopsis are provided.

© Copyright 2016 by the American Society of Plant Taxonomists
Melanie A. Link-Pérez, Thomas G. Ludwig, Cody J. Ledford, Matthew H. Seabolt, and Emily B. Sessa "Lectotypification of Adiantopsis alata (Pteridaceae) and Descriptions of New Palmate Species in the Guiana Shield," Systematic Botany 41(4), 906-918, (15 December 2016). https://doi.org/10.1600/036364416X694008
Published: 15 December 2016
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