@article {133,
	title = {Taxonomy, identity, and status of Isoetes virginica (Isoetaceae)},
	journal = {Castanea},
	volume = {61},
	year = {1996},
	note = {Cited By (since 1996):6Export Date: 11 November 2013Source: Scopus},
	month = {1996///},
	pages = {145 - 160},
	abstract = {The quillwort Isoetes virginica was described from material from a single location in west central Virginia in 1937. Subsequent treatments have considered it to be either a rare Virginia endemic, a synonym of Isoetes melanopoda or as a broadly defined taxon including the Piedmont endemic Isoetes piedmontana. The discovery of a new population near the type locality and rediscovery of an historical station has permitted cytological and ecological investigations of the original species concept. These investigations establish that Isoetes virginica is tetraploid and provide additional morphological and ecological evidence for this distinct species. Characteristics separating Isoetes virginica from the morphologically similar Isoetes piedmontana and Isoetes melanopoda are discussed. A lectotype for Isoetes virginica is designated. This pteridophyte is considered a Virginia endemic with a total known population of about 350 plants.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0030432806\&partnerID=40\&md5=41e631047e913bf96b59884bb8643408},
	author = {Brunton, D.F. and Britton, D.M. and Wieboldt, T.F.}
}
@article {141,
	title = {Isoetes hyemalis sp. nov. (Isoetaceae): a new quillwort from the southeastern United States},
	journal = {Castanea},
	volume = {59},
	year = {1994},
	note = {Cited By (since 1996):13Export Date: 11 November 2013Source: Scopus},
	month = {1994///},
	pages = {12 - 21},
	abstract = {Isoetes hyemalis sp. nov., is described from deciduous and mixed forest swamps. Populations are known from Virginia, South Carolina, and North Carolina with the greatest number occurring in the latter. Ecological, morphological, and geographic characteristics are described and discussed. -from Authors},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0028557718\&partnerID=40\&md5=c85aca50f0892224e4c64bf446144f72},
	author = {Brunton, D.F. and Britton, D.M. and Taylor, W.C.}
}
@article {69,
	title = {Taxonomic reassessment of North American granite outcrop Isoetes species with emphasis on vegetative morphology and I. Piedmontana (Pfeiffer) reed sensu lato},
	journal = {Castanea},
	volume = {70},
	year = {2005},
	note = {Export Date: 11 November 2013Source: Scopus},
	month = {2005///},
	pages = {204 - 221},
	abstract = {A taxonomic study of collections previously identified as Isoetes melanospora, I. piedmontana, and I. tegetiformans was undertaken emphasizing vegetative characters. The taxonomic position of I. piedmontana was also assessed using cytogeography and a cursory examination of the allozyme locus TPI-2. Isoetes melanospora, I. piedmontana, and I. tegetiformans can be sufficiently distinguished using characters derived from leaves and corms. Isoetes piedmontana occurs as diploid, triploid, and allotetraploid entities. Diploids in the western and eastern parts of the geographic range are genetically distinct. Allotetraploids in eastern Alabama are composed of different genomes than those in North Carolina. Isoetes piedmontana is currently interpreted as an assemblage of morphologically indistinguishable species and is undergoing further taxonomic investigation. The typification of I. piedmontana is clarified, and a key with descriptions of the granite outcrop Isoetes species of the southeastern United States Piedmont is provided.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-26844507369\&partnerID=40\&md5=bf4117785fa3f8ff3d4bb96bd79adbc3},
	author = {Heafner, K.D. and Bray, R.D.}
}
@article {66,
	title = {Isoetes melanopoda spp. silvatica (subsp. nov.), A new quillwort (Isoetaceae) from eastern North America},
	journal = {Castanea},
	volume = {71},
	year = {2006},
	note = {Export Date: 11 November 2013Source: Scopus},
	month = {2006///},
	pages = {15 - 30},
	abstract = {Isoetes melanopoda, a diploid species of ephemeral prairie wetland swales primarily in central North America, has also been found in swamp forests over a wide area of eastern North America in recent years. Determination of certain morphological and ecological characteristics (leaf width, habitat preference, leaf base color, megaspore ornamentation pattern, and megaspore size) distinguishes two population groupings within the species range that maintain discreet geographic distributions and thus represent distinct taxa. Most populations of these two eastern and western taxa are distinctive enough to argue for identification as separate species within I. melanopoda (s.l.). The existence of some apparently intermediate populations within a transition zone between the two taxa and the absence of stand-alone diagnostic identification features, however, indicates that a subspecific level of distinction is more appropriate. Isoetes melanopoda subsp. silvatica, subsp. nov., is proposed for the previously unnamed eastern taxon.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33744742329\&partnerID=40\&md5=7aca3325d15a4c88962a29a94fd39f25},
	author = {Brunton, D.F. and Britton, D.M.}
}
