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Synopsis of Mickelia, a newly recognized genus of bolbitidoid ferns (Dryopteridaceae)

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Abstract

Our recent molecular phylogenetic study revealed a previously unrecognized clade of six species that is sister to Elaphoglossum. Within this clade, four species are currently classified in Bolbitis, one in Lomagramma, and one in Acrostichum. For this clade, we propose the name Mickelia, with M. nicotianifolia as the type species. We also make new combinations for the species in our phylogenetic study shown to belong to Mickelia (M. bernoullii, M. guianensis, M. hemiotis, M. nicotianifolia, M. oligarchica, and M. scandens) and two other species believed to belong to the clade based on morphology (M. lindigii, M. pergamentacea). A new hybrid and two new species are also described (M. ×atrans, M. furcata, and M. pradoi). In total, Mickelia consists of ten species and one hybrid. It is entirely neotropical. We provide a key to the genera of bolbitidoid ferns and a synopsis of Mickelia that gives for each species a complete synonymy, geographical distribution, comparative discussion, and illustration.

Resumo

Análises filogenéticas recentes revelaram a existência de uma clado composto por seis espécies, irmão de Elaphoglossum. Das espécies incluídas nestas análises, quatro são atualmente tratadas em Bolbitis, uma em Lomagramma, e uma em Acrostichum. A este clado propomos o nome Mickelia , com M. nicotianifolia sendo sua espécie-tipo. Neste trabalho são apresentadas as novas combinações para as espécies de Mickelia, tanto as que foram tratadas nas análises filogenéticas (M. bernoullii, M. guianensis, M. hemiotis, M. nicotianifolia, M. oligarchica e M. scandens), quanto para duas outras que são aqui incluídas com base em evidências morfológicas (M. lindigii e M. pergamentacea). Um híbrido novo e duas espécies novas são também descritos (M. ×atrans, M. furcata e M. pradoi). No total, Mickelia compreende dez espécies e um híbrido. O gênero é inteiramente neotropical, e é caracterizado pelo hábito hemiepifítico, nervuras anastomosadas, e pela ausência de gemas (essas, se presentes, surgindo próximas à junção da pina com a raque). São apresentadas uma chave para os gêneros das samambaias bolbitidoides, e uma sinopse para Mickelia contendo uma lista completa de sinônimos, dados sobre distribuição geográfica, discussões comparativas e ilustrações.

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Acknowledgments

This research was funded by a grant to the first author from the United States National Science Foundation (DEB 0717056). Labiak’s research at the New York Botanical Garden was partially funded by the Brazilian government (CNPq/PDE 201782/2008-1). We thank Alan R. Smith, Jefferson Prado, and Fernando Matos for helpful information about specimens, and Judith Garrison Hanks for help in taking the SEM photomicrographs of the spores. We are grateful to David Barrington and Thomas Janssen, who provided many helpful comments on the manuscript. We thank John Mickel for allowing use of the line illustration for Fig. 5, drawn by Bobbi Angell, from The Pteridophytes of Mexico. The line illustrations in Figs. 2, 6, 8, and 9 were prepared by Haruto Fukuda.

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Authors and Affiliations

  1. The New York Botanical Garden, Bronx, NY, 10458-5126, USA

    Robbin C. Moran & Michael Sundue

  2. Depto. de Botânica, Universidade Federal do Paraná, C.P. 19031, 81531-980, Curitiba, PR, Brazil

    Paulo H. Labiak

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  1. Robbin C. Moran
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  2. Paulo H. Labiak
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  3. Michael Sundue
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Correspondence to Robbin C. Moran.

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Moran, R.C., Labiak, P.H. & Sundue, M. Synopsis of Mickelia, a newly recognized genus of bolbitidoid ferns (Dryopteridaceae). Brittonia 62, 337–356 (2010). https://doi.org/10.1007/s12228-010-9158-9

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