@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.}
}
@article {200,
	title = {Hydrochemical characterization of a stand of the threatened endemic Iso{\"e}tes malinverniana},
	journal = {American Fern Journal},
	volume = {103},
	number = {4},
	year = {2014},
	pages = {241{\textendash}244},
	keywords = {Isoetaceae, Isoetes malinverniana},
	issn = {0002-8444},
	doi = {http://dx.doi.org/10.1640/0002-8444-103.4.241},
	url = {http://www.bioone.org/doi/full/10.1640/0002-8444-103.4.193},
	author = {Abeli, T. and Orsenigo, S. and Ardenghi, N. M. G. and Lucassen, E.C.H.E.T. and Smolders, A.J.P.}
}
@article {FEDR:FEDR201200020,
	title = {Iso{\"e}tes viridimontana: A Previously Unrecognized Quillwort from Vermont, USA},
	journal = {American Fern Journal},
	volume = {104},
	number = {1},
	year = {2014},
	pages = {7{\textendash}15},
	abstract = {<p>Isoetes viridimontana is described and illustrated. Plants of this species are currently known only from Haystack Pond, a small, acidic, oligotrophic lake in south central Vermont. Isoetes viridimontana is distinguished from other Isoetes species in northeastern North America by its size (less than 5 cm high) and granulate to rugulate megaspore texture.</p>
},
	keywords = {Isoetaceae, Isoetes viridimontana, New species},
	issn = {0002-8444},
	doi = {http://dx.doi.org/10.1640/0002-8444-104.1.7},
	author = {Rosenthal, Michael A. and Rosenthal, Sharon R. and Johnson, Gabriel and Taylor, W. Carl and Zimmer, Elizabeth A.}
}
@article {130,
	title = {The status, distribution, and identification of Georgia Quillwort (Isoetes georgiana; Isoetaceae)},
	journal = {American Fern Journal},
	volume = {86},
	year = {1996},
	note = {Cited By (since 1996):5Export Date: 11 November 2013Source: Scopus},
	month = {1996///},
	pages = {105 - 113},
	abstract = {Although recently described from only a single population, Isoetes georgiana is now known in at least 12 additional locations on the Georgia coastal plain. The distribution and habitat characteristics of these populations are described. Field and SEM examinations are employed to provide elaboration of the limited morphological and ecological information published to date. Speculation on the probable allopolypoid origin of Isoetes georgiana also is offered. It remains a locally distributed and rare species which may qualify for listing under the U.S. Endangered Species Act.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0347105301\&partnerID=40\&md5=6d316f38d99032ba8a03e94d7d877dd9},
	author = {Brunton, D.F. and Britton, D.M.}
}
@article {134,
	title = {Taxonomy and Distribution of Isoetes valida},
	journal = {American Fern Journal},
	volume = {86},
	year = {1996},
	note = {Cited By (since 1996):7Export Date: 11 November 2013Source: Scopus},
	month = {1996///},
	pages = {16 - 25},
	abstract = {Isoetes valida constitutes an earlier valid name for I. caroliniana. This emergent aquatic, diploid quillwort is known from nine states along the Appalachian Mountains and Piedmont, growing in cold streams, mountain woodland ponds and in the saturated organic ooze of springs from central Pennsylvania to northeastern Alabama. It exhibits a distribution similar to several other endemic Appalachian pteridophytes. Disjunct populations are also known from the Coastal Plain of southeastern Alabama and Delaware. Although similar in appearance to I. engelmannii, I. valida is typically distinguished by its raggedly reticulate megaspore ornamentation, its velum covering 50\% or more of the unmarked sporangium wall, and spinulose microspores.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0040732154\&partnerID=40\&md5=5b1ed779661b2512493ef8631acf4998},
	author = {Brunton, D.F. and Britton, D.M.}
}
@article {135,
	title = {Isoetes x bruntonii (Isoetes engelmannii x I. hyemalis), a New Hybrid Quillwort from Virginia},
	journal = {American Fern Journal},
	volume = {86},
	year = {1996},
	note = {Cited By (since 1996):5Export Date: 11 November 2013Source: Scopus},
	month = {1996///},
	pages = {8 - 15},
	abstract = {Isoetes xbruntonii is the hybrid between the diploid I. engelmannii (2n = 22) and the tetraploid I. hyemalis (2n = 44). An apparently sterile triploid (2n = 33), it has megaspore features intermediate between the two parents, but does not exhibit hybrid vigor. Isoetes xbruntonii is frequent at localities in the outer Coastal Plain of Virginia.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-1542605410\&partnerID=40\&md5=9808bd7a43d7b9c4a26e1180bb00b3ce},
	author = {Musselman, L.J. and Bray, R.D. and Knepper, D.A.}
}
@article {122,
	title = {Levels and Patterns of Genetic Variation in Iso{\"e}tes karstenii with Observations on I. palmeri},
	journal = {American Fern Journal},
	volume = {87},
	year = {1997},
	note = {Cited By (since 1996):9Export Date: 11 November 2013Source: Scopus},
	month = {1997///},
	pages = {104 - 115},
	abstract = {Genetic variation was surveyed in eleven populations from throughout the range of the diploid Iso{\"e}tes karstenii, as well as in two populations of a closely related tetraploid, I. palmen, using allozyme electrophoresis. Genetic variation was high in I. karstenii and appears to be highly structured, as evidenced by analyses of F-statistics and genetic vs. geographic distance. No fixed unique alleles were found that could distinguish between I. karstenii and I. palmeri, although one allele was observed that was unique to I. palmeri. These analyses confirm earlier observations suggesting low levels of interpopulational gene flow and have implications for sampling strategies.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0343254203\&partnerID=40\&md5=c845f506b7c6840260fe7532b60a886d},
	author = {Small, R. and James Hickey, R.}
}
@article {100,
	title = {The utility of nuclear ITS, a LEAFY homolog intron, and chloroplast atpB-rbcL spacer region data in phylogenetic analyses and species delimitation in Iso{\"e}tes},
	journal = {American Fern Journal},
	volume = {91},
	year = {2001},
	note = {Cited By (since 1996):46Export Date: 11 November 2013Source: Scopus},
	month = {2001///},
	pages = {166 - 177},
	abstract = {Despite its ancient origins, its worldwide distribution, and adaptation to diverse habitats, Iso{\"e}tes has a highly conserved morphology. This feature has made it difficult to resolve species and species relationships using morphological characters. In this paper, we report the utility of nucleotide sequences from the nuclear internal transcribed spacer (ITS) regions, chloroplast atpB/rbcL intergenic spacer region, and second intron of a LEAFY (LFY) homolog for identifying species relationships, delimiting basic diploid species, and determining hybrid origins. Variation in the ITS regions and atpB/rbcL spacer is most useful at the family level in Iso{\"e}tes and the LFY second intron is appropriate at the species and population level. The tree resulting from an analysis of the combined nuclear ITS and chloroplast atpB/rbcL spacer contains three major well supported clades (bootstrap >= 99\%): an Old-World/California clade (I. abyssinica, I. longissima, I. velata, I. nuttallii, and I. orcuttii), an Asian/Australian clade (I. taiwanensis, I. japonica, I. kirkii, and I. drummondii), and a poorly resolved clade consisting of nine North American species. To further resolve and delimit the North American species, a combination of the LEAFY second intron and ITS data was used. The resulting consensus tree has limited resolution, supporting the hypothesis that the North American species complex radiated rapidly. The combination of LFY and ITS data provided numerous characters, both substitutions and indels, that are useful in species delimitation and identification of cryptic species. ITS sequence data, through additive banding and sequence misalignment, is also useful in confirming interspecific hybrids and determining their parental origins.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0040332183\&partnerID=40\&md5=e97f5c223e9a884b67c6347a0db81dd5},
	author = {Hoot, S.B. and Taylor, W.C.}
}
@article {101,
	title = {Systematics of the Northern Andean Iso{\"e}tes karstenii complex},
	journal = {American Fern Journal},
	volume = {91},
	year = {2001},
	note = {Cited By (since 1996):13Export Date: 11 November 2013Source: Scopus},
	month = {2001///},
	pages = {41 - 69},
	abstract = {The Iso{\"e}tes karstenii complex includes those species characterized by laevigate megaspores, acute to free ala apices, a highly reduced labium, and distributions in the high altitude p{\'a}ramos of Venezuela, Colombia, and Ecuador. These species have been variously treated in the literature. Many early authors placed all Andean laevigate-spored specimens in Iso{\"e}tes lechleri, a central Andean species, while one later author recognized up to eight northern Andean species distinct from I. lechleri. This research represents a revisionary study to determine the number and identity of the taxa in this complex. Multivariate and descriptive analyses of morphological data and chromosome counts were performed. Five species are recognized including the previously described I. karstenii and I. palmeri. One variety is transferred from I. lechleri to I. karstenii (I. karstenii var. anomala). Three of the recognized species are newly described: I. fuliginosa, I. hemivelata and I. precocia. Chromosome counts revealed that I. karstenii and I. precocia are diploids (2n = 22) and that I. palmeri is tetraploid (2n = 44). Estimates of chromosome number based on spore size for I. fuliginosa and I. hemivelata indicate that they are polyploid (2n >= 44).},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0038976036\&partnerID=40\&md5=b6f84ea9232d1f6136401b0eed965577},
	author = {Small, R.L. and Hickey, R.J.}
}
@article {108,
	title = {The chloroplast genome structure of the vascular plant Iso{\"e}tes is similar to that of the liverwort Marchantia},
	journal = {American Fern Journal},
	volume = {90},
	year = {2000},
	note = {Export Date: 11 November 2013Source: Scopus},
	month = {2000///},
	pages = {51 - 59},
	abstract = {Restriction site mapping was used to characterize the chloroplast genome of the lycophyte, Iso{\"e}tes melanopoda. The Iso{\"e}tes chloroplast genome is approximately 139-145 kb in size with an inverted repeat of 12-13 kb. The gene content and consensus gene order are similar to that of Marchantia. A distinctive feature of the Iso{\"e}tes genome is an increased size of the small single copy (SSC) region possibly due to the insertion of a piece of DNA (3-8 kb) of unknown composition. The inferred insertion, along with a slightly larger inverted repeat, are responsible for the apparent size difference in the total genome relative to Marchantia. Patterns of restriction fragments were also consistent with the presence of a small inversion (2-3 kb) in the large single copy (LSC) region.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-9944243780\&partnerID=40\&md5=3fb650c66f2ac19a030f74b0002f62dd},
	author = {Duff, R.J. and Schilling, E.E.}
}
@article {112,
	title = {Rush quillwort (Isoetes junciformis, sp. nov.), a new pteridophyte from Southern Georgia},
	journal = {American Fern Journal},
	volume = {89},
	year = {1999},
	note = {Cited By (since 1996):4Export Date: 11 November 2013Source: Scopus},
	month = {1999///},
	pages = {187 - 197},
	abstract = {A previously undescribed pteridophyte, Isoetes junciformis, is reported from Tift County, Georgia. This new tetraploid appears to be a rare endemic of the upper Coastal Plain region. It is suspected to be an allopolyploid, possibly arising from the hybrid between I. flaccida and I. melanopoda.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0040322022\&partnerID=40\&md5=047fbe12b3c7afa03fe6de775a9a52c7},
	author = {Brunton, D.F. and Britton, D.M.}
}
@article {113,
	title = {Some observations on the reproductive anatomy of Isoetes andicola},
	journal = {American Fern Journal},
	volume = {89},
	year = {1999},
	note = {Cited By (since 1996):1Export Date: 11 November 2013Source: Scopus},
	month = {1999///},
	pages = {198 - 203},
	abstract = {The gametophyte generation of Isoetes andicola was investigated anatomically and using microspectrophotometry. Microsporangia, which sometimes additionally contained a few abortive megaspores, produced numerous microspores that developed apparently functional male gametophytes and swimming spermatozoids. In contrast, the female gametophytes produced from functional megaspores were found to contain archegonia lacking neck canals and that mostly did not develop functional embryos. Instead, the megagametophytes were found to contain embryos deeply embedded within somatic tissue. The nuclei of these embryos were about twice the size and contained about twice as much DNA as of those in adjacent gametophytic cells. Such embryos, which were not associated with archegonia, are interpreted to have arisen via some form of apogamy.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0039848987\&partnerID=40\&md5=10ff19f4c431ee373b9166f69fc3e014},
	author = {Karrfalt, E.}
}
@article {114,
	title = {Isoetes in Alaska and the Aleutians},
	journal = {American Fern Journal},
	volume = {89},
	year = {1999},
	note = {Cited By (since 1996):5Export Date: 11 November 2013Source: Scopus},
	month = {1999///},
	pages = {133 - 141},
	abstract = {Three species of Isoetes are recognized as present in the study area: I. echinospora Durieu diploid, 2n = 22), I. maritima Underw. (tetraploid, 2n = 44) and I. occidentalis L.F. Hend. (hexaploid, 2n = 66). Three interspecific hybrids are expected and two are known to be present: I. Xpseudotruncata D.M. Britton \& D.F. Brunton (triploid, 2n = 33) and I. Xtruncata (Eaton) Clute (pentaploid, 2n = 55). The missing hybrid taxon is I. echinospora (diploid)I. occidentalis (hexaploid).},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0008927385\&partnerID=40\&md5=a9775f2c1cc90773eb8ea0262ee7cd74},
	author = {Britton, D.M. and Brunton, D.F. and Talbot, S.S.}
}
@article {116,
	title = {Fungal Associations with Isoetes Species},
	journal = {American Fern Journal},
	volume = {88},
	year = {1998},
	note = {Cited By (since 1996):5Export Date: 11 November 2013Source: Scopus},
	month = {1998///},
	pages = {138 - 142},
	abstract = {The fungal associations present in the roots and corms of four species of Isoetes found in Rajasthan, India, are described. Fungal fruiting bodies and chlamydospores are assigned to the mycorrhizal genus Glomus, and the septate branched intracellular mycelium is assigned to the genus Rhizoctonia of the Deuteromycotina.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0008039063\&partnerID=40\&md5=1128f92d04a506b68b8c2e7085428343},
	author = {Sharma, B.D.}
}
@article {89,
	title = {A re-evaluation of Isoetes savatieri franchet in Argentina and Chile},
	journal = {American Fern Journal},
	volume = {93},
	year = {2003},
	note = {Cited By (since 1996):9Export Date: 11 November 2013Source: Scopus},
	month = {2003///},
	pages = {126 - 136},
	abstract = {Isoetes suvutieri has traditionally been interpreted as being a uniform aquatic ranging from the southernmost regions of South America to the central Andes of Chile and Argentina. An examination of herbarium material supports the recognition of two taxa, a southern I. savatieri and a more northern I. chubutiana, from central Chile and Argentina. The latter taxon is hexaploid and described here as a new species. The morphology of these species suggest that they are sister species resulting from divergence following a polyploidy event. These species, and several other species pairs, provide the best and, to date, only examples of allopatric divergence in polyploid Isoetes.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0141676348\&partnerID=40\&md5=323242638fd59ed4fe04b166c7422ad8},
	author = {Hickey, R.J. and Macluf, C. and Taylor, W.C.}
}
@article {97,
	title = {Iso{\"e}tes x herb-wagneri, an interspecific hybrid of I. bolanderi x I. echinospora (Iso{\"e}taceae)},
	journal = {American Fern Journal},
	volume = {92},
	year = {2002},
	note = {Export Date: 11 November 2013Source: Scopus},
	month = {2002///},
	pages = {161 - 163},
	abstract = {Iso{\"e}tes x herb-wagneri, the interspecific hybrid between Iso{\"e}tes bolanderi and I. echinospora, is described. The epithet commemorates Warren (Herb) Wagner for the direction and help he provided to the author.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0036555158\&partnerID=40\&md5=5756ed478e1a0ae4b05b7f08209f0c5d},
	author = {Taylor, W.C.}
}
@article {78,
	title = {Chromosome behavior during meiosis and development of spore mother cells in the Chinese quillwort Isoetes sinensis T. C. Palmer (Isoetaceae)},
	journal = {American Fern Journal},
	volume = {94},
	year = {2004},
	note = {Cited By (since 1996):7Export Date: 11 November 2013Source: Scopus},
	month = {2004///},
	pages = {183 - 195},
	abstract = {Chromosome behavior during meiosis of the tetraploid Isoetes sinensis was observed to be similar to that of basic diploid Isoetes species. This observation was consistent with the previous report that polyploid species of Isoetes are allopolyploids. Meiosis was generally similar in both megaspore and microspore mother cells, but differences were observed. Due to the smaller size of the microspore mother cells, during prophase I, chromosomes are not as dispersed as those in megaspore mother cells. Cytomixis was observed in all stages of meiosis in microspore mother cells, but it was not seen at any stage of meiosis in megaspore mother cells. Cytomixis, lagging chromosomes, chromosome bridges, chromosome fragments, and micronuclei, observed during meiosis in I. sinensis, can affect sexual reproduction, but it does not appear to be a major cause of population decline in this species. The major cause of decline is habitat degradation from human disturbance. The few remaining populations of the Chinese quillwort are fragmented and the numbers of individuals contained in these populations dwindle as a result of habitat degradation. Conservation efforts are needed to save I. sinensis from extinction.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-11444270683\&partnerID=40\&md5=e3b19a6dd117ccd20573e526dceb63bf},
	author = {He, Z. and Wang, H. and Li, J. and Ye, Q. and Taylor, W.C.}
}
@article {80,
	title = {Phylogenetic relationships of Iso{\"e}tes (Iso{\"e}taceae) in China as revealed by nucleotide sequences of the nuclear ribosomal ITS region and the second intron of a LEAFY homolog},
	journal = {American Fern Journal},
	volume = {94},
	year = {2004},
	note = {Cited By (since 1996):17Export Date: 11 November 2013Source: Scopus},
	month = {2004///},
	pages = {196 - 205},
	abstract = {Iso{\"e}tes is an ancient lycopod lineage with a highly conserved morphology that provides few morphological characters to resolve the phylogeny of its species. Species appear to have evolved by divergence and allopolyploidy. The basic diploids I. hypsophila, I. taiwanensis, and I. yunguiensis and the tetraploid I. sinensis occur in China. Analysis of ITS sequences indicates that the Chinese Iso{\"e}tes species are part of an Australasian clade including I. brevicula from Western Australia and I. kirkii from New Zealand. Two distinct cloned sequences of the second intron of a LEAFY homolog were recovered from I. sinensis supporting the hypothesis that I. sinensis is an allotetraploid. One of the I. sinensis cloned sequences was similar to the I. taiwanensis sequence and the other cloned sequence was similar to the I. yunguiensis sequence identifying I. taiwanensis and I. yunguiensis as the likely parents of I. sinensis. Other cloned sequences recovered from I. sinensis were recombined parts of the two distinct sequences. Morphological evidence supporting an allotetraploid origin of I. sinensis is found in its larger microspore size and intermediate megaspore texture compared to I. taiwanensis, and I. yunguiensis.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-11444262662\&partnerID=40\&md5=7b7a2b568e139bee1b60bd62836ff6ef},
	author = {Taylor, W.C. and Lekschas, A.R. and Qing, F.W. and Liu, X. and Napier, N.S. and Hoot, S.B.}
}
@article {86,
	title = {Iso{\"e}tes tennesseensis (Iso{\"e}taceae), an Octoploid Quillwort from Tennessee},
	journal = {American Fern Journal},
	volume = {93},
	year = {2003},
	note = {Cited By (since 1996):5Export Date: 11 November 2013Source: Scopus},
	month = {2003///},
	pages = {184 - 190},
	abstract = {Iso{\"e}tes tennesseensis, an octoploid species with a chromosome count of 2n = 88, is described. It occurs in the Hiwassee River in Tennessee. Past collections of this species have been misidentified as Iso{\"e}tes macrospora (= I. lacustris). Iso{\"e}tes tennesseensis differs from I. lacustris in chromosome number, megaspore and microspore morphology and distribution. Speculation on the origin of this new species is presented.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0242507449\&partnerID=40\&md5=5d391ab9dc24130eb1ab9970d4a6dcf3},
	author = {Luebke, N.T. and Budke, J.M.}
}
@article {71,
	title = {Comparative morphology of the glossopodia of three North American Isoetes Ligules},
	journal = {American Fern Journal},
	volume = {95},
	year = {2005},
	note = {Cited By (since 1996):1Export Date: 11 November 2013Source: Scopus},
	month = {2005///},
	pages = {94 - 114},
	abstract = {One of the most distinctive features of the heterosporous lycopsids is the presence of a ligule. This structure, currently found only in Isoetes and Selaginella, is comprised of a basally embedded glossopodium and a free distal tongue. Previous studies on Indian species have demonstrated small variations in glossopodia suggesting the possibility that this structure could have taxanomic use. Serial cross, paradermal, and sagittal sections of glossopodia from three different North American species, representing three ploidy levels, were made. Three-dimensional digital rendering of the glossopodia provided comparative data for the three North America species and allowed comparisons with previously published descriptions. In general, the shape of the glossopodium is similar in all three North American species. There are several structural differences among them, such as the shape of the cornua, the length of the medimoles, and the angle of the glossopodium relative to the leaf axis.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-27844529330\&partnerID=40\&md5=9334fdaf0c080402ef9a0ccef97c9210},
	author = {Shaw, S.W. and Hickey, R.J.}
}
@article {74,
	title = {Confirming dioecy in Iso{\"e}tes butleri},
	journal = {American Fern Journal},
	volume = {95},
	year = {2005},
	note = {Cited By (since 1996):2Export Date: 11 November 2013Source: Scopus},
	month = {2005///},
	pages = {85 - 87},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-22444443938\&partnerID=40\&md5=bc7628e7743a43de8d2db0b4c6ad2e7a},
	author = {Turner, N.A. and Taylor, W.C. and Masi, S. and Stupen, M.E.}
}
@article {61,
	title = {Morphological and anatomical variation in sporophylls of Isoetes sinensis palmer (Isoetaceae), an endangered quillwort in China},
	journal = {American Fern Journal},
	volume = {96},
	year = {2006},
	note = {Cited By (since 1996):3Export Date: 11 November 2013Source: Scopus},
	month = {2006///},
	pages = {67 - 74},
	abstract = {Isoetes sinensis is a rare and endangered plant in wetlands of southeastern China. Previous studies have reported the chromosome number, geographic distribution, and ecology of this Asian endemic, but there has not been an analysis of diagnostic characters associated with the sporophylls of I. sinensis in China. Therefore, morphological and anatomical variation of sporophylls in the three known Chinese populations of I. sinensis were evaluated and compared. The variation found is discussed in relation to the present taxonomy of I. sinensis.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33845932936\&partnerID=40\&md5=dabaeae02209c3a5f4288b0f6d03a961},
	author = {Liu, H. and Wang, Q.F. and Taylor, W.C.}
}
@article {55,
	title = {Isoetes araucaniana, a new species from southern South America},
	journal = {American Fern Journal},
	volume = {97},
	year = {2007},
	note = {Export Date: 11 November 2013Source: Scopus},
	month = {2007///},
	pages = {220 - 224},
	abstract = {Isoetes araucaniana is newly described from central Chile. This aquatic species is endemic to Araucan{\'\i}a and is the only southern Andean species with strongly and densely reticulate megaspores.},
	keywords = {Isoetes, New species, South America},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-39449094567\&partnerID=40\&md5=187a92568719c2772ed711b49957998d},
	author = {MacLuf, C.C. and Hickey, R.J.}
}
@article {43,
	title = {Isoetes maxima, a new species from Brazil},
	journal = {American Fern Journal},
	volume = {99},
	year = {2009},
	note = {Cited By (since 1996):1Export Date: 11 November 2013Source: Scopus},
	month = {2009///},
	pages = {194 - 199},
	abstract = {Isoetes maxima from eastern Brazil is described as a new species. This taxon differs from other fully aquatic species in South America by a combination of its overall size, leaf coloration, finely tapering subulae, and megaspore morphology. {\textcopyright} 2009, Americian Fern Society.},
	keywords = {Brazil, Isoetes maxima, New species},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-76449121955\&partnerID=40\&md5=0bb4244c3bd0be9f7105bd2c1293d6fc},
	author = {Hickey, R.J. and MacLuf, C.C. and Link-Prez, M.}
}
@article {33,
	title = {Notes on the natural history and reproductive biology of Iso{\"e}tes malinverniana},
	journal = {American Fern Journal},
	volume = {100},
	year = {2010},
	note = {Cited By (since 1996):2Export Date: 11 November 2013Source: Scopus},
	month = {2010///},
	pages = {235 - 237},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-79955048957\&partnerID=40\&md5=49f45178c819be9b73d1d522159390d0},
	author = {Abeli, T. and Mucciarelli, M.}
}
@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.}
}
@article {2,
	title = {Iso{\"e}tes todaroana (Iso{\"e}taceae, Lycopodiophyta), a new species from Sicily (Italy)},
	journal = {American Fern Journal},
	volume = {99},
	year = {2010},
	chapter = {238},
	keywords = {Anatomy, Conservation, Distribution, Ecology, Iso{\"e}tes todaroana, Italy, Sicily},
	author = {Troia, Angelo and Raimondo, F M}
}
