@article {102,
	title = {Isoetes mattaponica (Isoetaceae), a new diploid quillwort from freshwater tidal marshes of Virginia},
	journal = {Novon},
	volume = {11},
	year = {2001},
	note = {Cited By (since 1996):2Export Date: 11 November 2013Source: Scopus},
	month = {2001///},
	pages = {200 - 204},
	abstract = {Isoetes mattaponica is a rare quillwort of freshwater tidal rivers of eastern Virginia with a somatic chromosome number of 2n = 22. Megaspores have low regulate muri on both the proximal and distal surfaces; the girdle is broad. Microspores are echinate-spinose with ornamented spines. Isoetes mattaponica may be one of the parents of several polyploids in the Southeastern United States.},
	keywords = {Isoetaceae, Isoetes, North America, Quillwort, United States, Virginia},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0034905622\&partnerID=40\&md5=0a918d8dca0158c2b1216f1b1f080cd0},
	author = {Musselman, L.J. and Taylor, W.C. and Bray, R.D.}
}
@article {92,
	title = {Isoetes toximontana (Isoetaceae), a new quillwort with green megaspores from the Northern Cape of South Africa},
	journal = {Novon},
	volume = {12},
	year = {2002},
	note = {Cited By (since 1996):4Export Date: 11 November 2013Source: Scopus},
	month = {2002///},
	pages = {504 - 507},
	abstract = {Isoetes toximontana is only the second quillwort reported from the Northern Cape region in South Africa. It occurs in shallow water on the Gifberg. Megaspores are uniformly tuberculate on the proximal surface; their distal surfaces may have occasional rugi along with bullae. They are olive green when dry. Microspores are brown and aculeate. Preliminary field studies suggest that an unexpected diversity of quillworts is found in this region.},
	keywords = {Gifberg, Isoetaceae, Isoetes, Northern Cape Province, Quillwort, South Africa},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0036936160\&partnerID=40\&md5=345c74b24b350ea1ea344891e16d8c71},
	author = {Musselman, L.J. and Roux, J.P.}
}
@article {93,
	title = {Isoetes yunguiensis (Isoetaceae), a new basic diploid quillwort from China},
	journal = {Novon},
	volume = {12},
	year = {2002},
	note = {Cited By (since 1996):15Export Date: 11 November 2013Source: Scopus},
	month = {2002///},
	pages = {587 - 591},
	abstract = {Isoetes yunguiensis, a basic diploid species with a chromosome number of 2n = 22, is described and illustrated. This species occurs on the Yunnan-Guizhou Plateau in southwest China. It is similar to I. japonica in its appearance and emergent aquatic habit. Herbarium specimens of I. yunguiensis previously have been misidentified as I. japonica. Isoetes yunguiensis differs from I. japonica in megaspore and microspore morphology and chromosome number.},
	keywords = {China, East Asia, Isoetaceae, Isoetes, Quillwort, Yunnan-Guizhou Plateau},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0036939584\&partnerID=40\&md5=da8d4d4668c03846b51b3df5877e8602},
	author = {Wang, Q.-F. and Liu, X. and Taylor, W.C. and He, Z.-R.}
}
@article {96,
	title = {Phylogeny of Iso{\"e}tes (Lycopsida): Resolving basal relationships using rbcL sequences},
	journal = {Taxon},
	volume = {51},
	year = {2002},
	note = {Cited By (since 1996):20Export Date: 11 November 2013Source: Scopus},
	month = {2002///},
	pages = {83 - 89},
	abstract = {The phylogenetic relationships of Iso{\"e}tes (Iso{\"e}taceae) were investigated by means of a cladistic analysis using plastid rbcL sequences and a representative sample of 18 species. The analysis supports a basal split in Iso{\"e}tes separating two main groups, one including aquatic species from South America (I. bradei and I. amazonica) and West Africa (I. kersii and I. schweinfurthii), and the other including aquatic, amphibious and terrestrial species representing all major continents. Higher level relationships remain unresolved, but supported groups do conflict with previous morphology-based hypotheses. Comparatively low levels of sequence divergence indicate that the use of more rapidly evolving regions will be required to resolve higher level relationships. The phylogenetically isolated nature of Iso{\"e}tes will in such analyses make standard outgroup comparisons problematic, and results presented here will in this respect prove important by providing support for choosing among alternative rooting options.},
	keywords = {Isoetaceae, Isoetes, Phylogeny, rbcL},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0036254372\&partnerID=40\&md5=f4c2dc2699e8c72b00c4dccdb1f20c1f},
	author = {Rydin, C. and Wikstr{\"o}m, N.}
}
@book {59,
	title = {Phylogeny and biogeography of Iso{\"e}tes (Iso{\"e}taceae) based on nuclear and chloroplast DNA sequence data},
	series = {Systematic Botany},
	volume = {31},
	year = {2006},
	note = {Cited By (since 1996):14Export Date: 11 November 2013Source: Scopus},
	month = {2006///},
	pages = {449 - 460},
	abstract = {Despite its ancient origins, worldwide distribution, and adaptation to diverse habitats, Iso{\"e}tes species have a highly conserved morphology, making it difficult to resolve phylogenetic relationships using morphological characters. In this paper, we report the results from various analyses (maximum parsimony, maximum likelihood, and Bayesian inference) for Iso{\"e}tes species from around the world based on nucleotide sequences from the nuclear internal transcribed spacer (ITS) and chloroplast atpB/rbcL intergenic spacer regions. The trees resulting from our analyses of the combined data contain six major well-supported clades (bootstrap >= 90\%, posterior probabilities = 1.00): A clade with possible Gondwanan affinities (I. australis, I. coromandelina, I. panamensis, I. cubana, I. jamaicensis); a South African clade (I. capensis, I. toximontana, I. stellenbossiensis, I. stephansenii); a largely Northern Hemisphere clade (I. nuttallii, I. orcuttii, I. minima, I. dixitei, I. abyssinica, I. olympica, I. longissima, I. velata); an Asian/Australasian clade (I. drummondii, I. gunnii, I. pusilla, I. kirkii, I. muelleri, I. taiwanensis, I. japonica, I. yunguiensis, I. habbemensis); a Mediterranean clade (I. histrix and I. setacea); and a poorly resolved clade consisting of 12 new world species (American species complex). Our results are compared to past classifications and various biogeographical scenarios are explored. {\textcopyright} Copyright 2006 by the American Society of Plant Taxonomists.},
	keywords = {Biogeography, Isoetaceae, Isoetes, Phylogeny},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-67650146436\&partnerID=40\&md5=c418d4b55db9dd7f2436a8d3189f1552},
	author = {Hoot, S.B. and Taylor, W.C. and Napier, N.S.}
}
@article {60,
	title = {Inferring the root of Iso{\"e}tes: Exploring alternatives in the absence of an acceptable outgroup},
	journal = {Systematic Botany},
	volume = {31},
	year = {2006},
	note = {Cited By (since 1996):11Export Date: 11 November 2013Source: Scopus},
	month = {2006///},
	pages = {258 - 270},
	abstract = {The ancient divergence between the lycopsid genus Iso{\"e}tes and its closest living relative (Selaginella) has resulted in considerable morphological and genetic disparity, yet within Iso{\"e}tes there is remarkable morphological and genetic uniformity. This has made it difficult to identify the phylogenetic root of the genus. In this study, we addressed this problem and characterized the early branching patterns within Iso{\"e}tes using an expanded set of taxa and three molecular markers. We assessed the saturation in the molecular data sets, tested for differences in evolutionary rate, determined the stability of the ingroup topology, and evaluated the applicability of the molecular clock. We then explored three alternative rooting approaches: outgroup, midpoint, and maximum likelihood under the assumption of a molecular clock. Attempts to infer the root of Iso{\"e}tes using the outgroup approach were severely hindered by the effects of saturation, but the results from midpoint rooting and the enforcement of the molecular clock were highly consistent among the data sets. We identify the root of Iso{\"e}tes to be located among three major, highly supported clades. {\textcopyright} Copyright 2006 by the American Society of Plant Taxonomists.},
	keywords = {Isoetaceae, Isoetes, Lycophyte, Midpoint rooting, Phylogenetic root, Relative rate comparisons},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33745493624\&partnerID=40\&md5=8d3abb9eb77572545e97747f1aaf51a5},
	author = {Schuettpelz, E. and Hoot, S.B.}
}
@article {22,
	title = {A New Species of Diploid Quillwort (Isoetes, Isoetaceae, Lycophyta) from Lebanon},
	journal = {Novon},
	volume = {21},
	year = {2011},
	note = {Cited By (since 1996):2Export Date: 11 November 2013Source: Scopus},
	month = {2011///},
	pages = {295 - 298},
	abstract = {A new species, Isoetes libanotica Musselman, Bolin \&R. D. Bray (Isoetaceae, Lycophyta), is described from Akkar District of northern Lebanon. It is a seasonal terrestrial species of basaltic soils, diploid (2n = 22), with complete velum coverage. Megaspore diameter ranges from 338 to 477 lm with remote, low tuberculate ornamentation and a low to obsolete equatorial girdle; microspore length ranges from 25 to 30 lm, with echinate ornamentation. At the type locality of I. libanotica, two other Isoetes L. species occur sympatrically. These superficially similar Isoetes species can be differentiated from I. libanotica using megaspore characters; I. duriei Bory has larger alveolate megaspores and I. olympica A. Braun has a prominent equatorial girdle. Copyright {\textcopyright} 2011 BioOne All rights reserved.},
	keywords = {Isoetaceae, Isoetes, IUCN Red List, Lebanon, Lycophyta},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-80052645075\&partnerID=40\&md5=5602c6ac47a25c280f5981e0e73b67f3},
	author = {Bolin, J.F. and Bray, R.D. and Musselman, L.J.}
}
