@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 {218,
	title = {Key to the Quillworts (Isoetes: Isoetaceae) of the Southeastern United States},
	journal = {American Fern Journal},
	volume = {105},
	number = {2},
	year = {2015},
	pages = {86-100},
	abstract = {An illustrated key based on morphological, ecological and geographical characteristics is presented for the Isoetes taxa of the Coastal Plain, Piedmont and the eastern side of the Appalachian Mountains of Alabama, District of Columbia, Delaware, southern Maryland, North Carolina, South Carolina, Florida, Georgia, Mississippi, eastern Louisiana, southeastern Tennessee and eastern Virginia. The key includes 22 species, three additional subspecies/ varieties and nine sterile hybrids. It is primarily intended to serve as an investigative tool to assist field botanists engaged in conservation, floristic and ecological studies in the Southeast.},
	author = {Brunton, D.F.}
}
@article {217,
	title = {Isoetes in Kamchatka (northern Russian Far East), with the Description of a New Hybrid I. x paratunica (I. asiatica x I. maritima)},
	journal = {American Fern Journal},
	volume = {105},
	number = {2},
	year = {2015},
	pages = {101-112},
	abstract = {Two species of Isoetes (Isoetaceae) occur in the Kamchatka Peninsula, northern Russian Far East {\textemdash} I. asiatica (Makino) Makino and I. maritima Underw. The distribution and ecology of these species are discussed. A hybrid of these species was found alongside its parental species in south Kamchatka in the shallows of a lake impacted by humans, and it is formally described here as I. x paratunica D. F. Brunton, Mochalova \& A. A. Bobrov. It is the first Isoetes hybrid discovered in Russia.},
	author = {Mochalova, O.A. and Bobrov, A.A. and Brunton, D.F.}
}
