Abstract
Recent molecular phylogenetic studies have shown that Lastreopsis is paraphyletic. Twenty-seven of its species belong to a separate clade for which the previously published generic name Parapolystichum is available. Parapolystichum is widely distributed, with four species in the Neotropics, six in Africa, nine in Madagascar, and eight in Australia and New Zealand. We make the following 25 new combinations in Parapolystichum: P. acuminatum, P. acutum, P. barterianum, P. boivinii, P. confine, P. coriaceosquamatum, P. currorii subsp. currorii, P. currorii subsp. eglandulosum, P. excultum, P. fideleae, P. glabellum, P. hornei, P. manongarivense, P. microsorum ssp. microsorum, P. microsorum ssp. pentangulare, P. munitum, P. nigritianum, P. perrierianum, P. pseudoperrierianum, P. rufescens, P. smithianum, P. subsimile, P. tinarooense, P. vogelii, and P. windsorense. Also, we designate a lectotype for Dryopteris exculta var. squamifera (=Parapolystichum excultum). No known morphological characters distinguish Parapolystichum from Lastreopsis s.s. Certain species of Parapolystichum, however, bear buds distally along the rachis, whereas Lastreopsis lacks such buds. Because no morphological character, or suite of characters, consistently separates the two genera, nine species of Lastreopsis s.l., which were not included in the previous phylogenetic analyses, could not be classified in either Lastreopsis or Parapolystichum. New combinations are also made for L. dissecta, L. tripinnata and L. poecilophlebia, species previously classified in Oenotrichia and Coveniella. Because Coveniella was considered monotypic, it is here reduced to a synonym of Lastreopsis. As re-circumscribed here, Lastreopsis now consists of about 16 species, all restricted to southeastern Asia and Oceania.
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Literature Cited
Alston, A. H. G. 1959. The ferns and fern-allies of West Tropical Africa. Supplement to flora of West Tropical Africa. Ed. 2. Crown Agents for Oversea Governments and Administrations, London.
Andrews, S. B. 1990. Ferns of Queensland. Queensland Department of Primary Industries Information Series Q189008, Brisbane, Australia.
Brownlie, G. 1958. Chromosome numbers in New Zealand ferns. Transactions of the Royal Society of New Zealand 85: 213–216.
———. 1961. Additional chromosome numbers – New Zealand ferns. Transactions of the Royal Society of New Zealand (Botany) 1: 1–4.
Brownsey, P. J. 1998. Incertae Sedis. Pp. 496. In: P. M. McCarthy (ed.), Flora of Australia, volume 48, Ferns, gymnosperms, and allied groups. ABRS/CSIRO, Melbourne.
Christensen, C. 1919 [1920]. A monograph of the genus Dryopteris, Part II. The tropical American bipinnate-decompound species. Kongelige Danske Videnskabernes Selskabs Skrifter, Naturvidenskabelig of. Mathematiske Afdeling, ser. 8, 6: 3–132.
Holttum, R. E. 1959. Vegetative characters distinguishing the various groups of ferns included in Dryopteris of Christensen’s Index Filicum, and other ferns of similar habit and sori. Gardens Bulletin, Singapore17: 361–367.
Jones, D. L. 1998. Dryopteridaceae. Pp. 393–418. In: P. M. McCarthy (ed.), Flora of Australia, volume 48, Ferns, gymnosperms, and allied groups. ABRS/CSIRO, Melbourne.
Labiak, P. H., M. Sundue, G. Rouhan, J. Garrison Hanks, J. T. Mickel & R. C. Moran. 2014. Phylogeny and historical biogeography of the lastreopsid ferns (Dryopteridaceae). American Journal of Botany 101: 1207–1228.
Moran, R. C. 1995. Lastreopsis. Pp.: 201–202. In: R. C. Moran & R. Riba (volume eds.). Psilotaceae a Salviniaceae. In: G. Davidse, M. Sousa S., & S. Knapp (general eds.), Flora Mesoamericana. Volumen 1. Univ. Nacional Autónoma de México, Ciudad Universitaria.
Perrie, L. R. & P. J. Brownsey. 2012. Lastreopsis kermadecensis, a new species from Raoul Island in the Kermadec Islands, New Zealand, with notes on L. pacifica. New Zealand Journal of Botany 50: 29–36.
Rakotondrainibe, F. & F. Tronchet. 2009. Révision synoptique du genre Lastreopsis Ching (Dryopteridaceae) à Madagascar. Adansonia, série 3, 31: 7–24.
Roux, J. P. 2009. Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands. Strelitzia 23. Pretoria: South African National Biodiversity Institute.
Schuettpelz, E. H. & K. M. Pryer. 2007. Phylogeny of ferns inferred from 400 leptosporangiate species and three plastid genes. Taxon 56: 1037–1050.
Smith, A. R. & R. C. Moran 1995. Megalastrum Holttum. In: R.C. Moran & R. Riba (eds.). Psilotaceae a Salviniaceae. In: G. Davidse, M. Sousa & S. Knapp (eds.). Flora Mesoamericana. Universidad Nacional Autónoma de México, Ciudad de México, v. 1, pp. 202–204.
Smith, A. R., K. M. Pryer, E. Schuettpelz, P. Korall, H. Schneider & P. G. Wolf. 2006. A classification for extant ferns. Taxon 55: 705–731.
———, K. M. Pryer, E. Schuettpelz, P. Korall, H. Schneider & P. G. Wolf. 2008. Fern classification. Pp. 417–467. In: T. A. Ranker & C. H. Haufler (eds.), Biology and evolution of ferns and lycophytes. Cambridge: Cambridge University Press.
Sundue, M., R. Hirai & J. Prado. 2013. Rumohra glandulosissima (Dryopteridaceae) a new species from the Atlantic Rainforest, and revision of the species occurring in Brazil. Systematic Botany 38: 915–924.
Tryon, R. M. & A. F. Tryon. 1982. Ferns and allied plants, with special reference to tropical America. Springer-Verlag, New York.
Tryon, R. M. & Stolze, R. G. 1991. Pteridophyta of Peru, part IV: 17. Dryopteridaceae. Fieldiana, Botany, new series 27: 1-176.
Tindale, M. 1965. A monograph of the genus Lastreopsis Ching. Contributions from the New South Wales Herbarium, Flora Series 211: 59–78, tab. 1–23.
——— & S. K. Roy. 2002. A cytotaxonomic survey of the pteridophytes of Australia. Australian Systematic Botany 15: 839–937.
Walker, T. G. 1966. A cytotaxonomic survey of the pteridophytes of Jamaica. Transactions of the Royal Society of Edinburgh 66: 169–237.
———. 1973. Evidence from cytology in the classification of ferns. Pp. 91–110. In: A. C. Jermy, J. A. Crabbe & B. A. Thomas (eds), The phylogeny and classification of the ferns. Botanical Journal of the Linnean Society 67 (Suppl. 1).
———. 1985. Cytotaxonomic studies of the ferns of Trinidad. 2. The cytological and taxonomic implications. Bulletin of the British Museum (Natural History) 13: 149–249.
Yeuhong, Y., Q. Xinping & S. Serizawa. 2013. Pp. 158–168. Microlepia. In: W. Zhengyi, P. H. Raven & H. Deyuan (eds.), Flora of China, vols. 2–3, Lycopodiaceae through Polypodiaceae.
Acknowledgments
This research was supported by a grant to Moran from the United States National Science Foundation (DEB-1020443), and to Labiak by a grant from CNPQ (no. 301997/2010-1). We thank Michael Grayum, Jefferson Prado, and an anonymous reviewer for their helpful comments on the manuscript.
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Labiak, P.H., Sundue, M., Rouhan, G. et al. New combinations in Lastreopsis and Parapolystichum (Dryopteridaceae). Brittonia 67, 79–86 (2015). https://doi.org/10.1007/s12228-014-9351-3
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DOI: https://doi.org/10.1007/s12228-014-9351-3