@article {226,
	title = {Studies on chromosome numbers and spore size in Brazilian Iso{\"e}tes},
	journal = {American Fern Journal},
	volume = {105},
	number = {3},
	year = {2015},
	pages = {226-237},
	abstract = {The lycophyte genus Iso{\"e}tes L. is nearly cosmopolitan, with approximately 350 species, 23 of which occur in Brazil. The lack of adequate distinguishing morphological characters in the leaves and stems, as well as the frequent cases of hybridization and polyploidy, makes the identification of species very difficult. Usually the spores provide the best characters for distinguishing species within Iso{\"e}tes, but these can vary in size because of polyploidy and hybridization. In this work we studied the variation in size of both mega- and microspores, and the relationship between size and ploidy level. We also present the first chromosome counts for seven species that are endemic to Brazil: I. goebelii (2n  =  33), I. martii (2n  =  44), I. maxima (2n  =  22), I. organensis (2n  =  66), I. ramboi (2n  =  44) I. smithii (2n  =  44), and I. spannagelii (2n  =  22). Our results suggest a correlation between ploidy level and spore size can be useful for the establishment of a preliminary hypothesis on polyploidy and hybridization among Brazilian Iso{\"e}tes.},
	author = {Pereira, J.B. and Mittelbach, M. and Labiak, P.H.}
}
@article {Pereira2013869,
	title = {A new species of Isoetes with tuberculate spores from southeastern Brazil (Isoetaceae)},
	journal = {Systematic Botany},
	volume = {38},
	number = {4},
	year = {2013},
	note = {cited By (since 1996)0},
	pages = {869-874},
	abstract = {Isoetes quiririensis is described, illustrated, and compared to similar species. This species can be distinguished from other species in Brazil by a set of characters that include microphylls that are semi-cylindrical in cross section, velum covering more than 3/4 of the sporangium, tuberculate megaspores varying from 477-670 μm in diameter, echinate microspores, and a chromosome number of 2n = 22. We also include a key for species from the Atlantic Rainforest that have tuberculate megaspores, distribution maps, and spore images for all species that are discussed. Isoetes quiriensis is known only from the type locality, where it occurs as an aquatic in small streams at high elevations. We suggest it should be classified as a data deficient species based on the IUCN criteria. {\textcopyright} Copyright 2013 by the American Society of Plant Taxonomists.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84892771709\&partnerID=40\&md5=5330336025d70b7769a8178a24b91c8d},
	author = {Pereira, J.B.S. and Labiak, P.H.}
}
@article {17,
	title = {Isoetes mourabaptistae, a new species from Southern Brazil},
	journal = {American Fern Journal},
	volume = {102},
	year = {2012},
	note = {Export Date: 11 November 2013Source: Scopus},
	month = {2012///},
	pages = {174 - 180},
	abstract = {Isoetes mourabaptistae, a new species from southern Brazil, is described, illustrated, and compared to the most similar species. This new species is apparently restricted to southern Brazil, and is characterized by cristate to irregularly reticulate megaspores and microechinate microspores. It is an aquatic plant, occurring among submersed rocks along rivers, at about 9001100 m in elevation. {\textcopyright} 2012, American Fern Society.},
	keywords = {aquatic plants, diversity, Isoetaceae, lycophytes, taxonomy},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84868016532\&partnerID=40\&md5=d3bc8e1e27c5d582b331a37819fb1514},
	author = {Pereira, J.B. and Windisch, P.G. and Lorscheitter, M.L. and Labiak, P.H.}
}
