@article {118,
	title = {Isoetes microvela (Isoetaceae), a new quillwort from the coastal plain of the southeastern United States},
	journal = {Rhodora},
	volume = {100},
	year = {1998},
	note = {Cited By (since 1996):7Export Date: 11 November 2013Source: Scopus},
	month = {1998///},
	pages = {261 - 275},
	abstract = {Isoetes microvela, sp. nov., is described from cytologically confirmed hexaploid populations from the coastal plain of North Carolina. At least one population grows over thinly-buried calcareous bedrock, a rare condition on the predominantly acidic southeastern coastal plain. It is a large quillwort of periodically inundated and scoured stream banks and shallow water. It is characterized by a densely short-crested to reticulate-tuberculate megaspore ornamentation pattern intermediate in appearance between that of I. appalachiana and I. hyemalis, an exceptionally small velum covering {\textpm} 10\% of the heavily brown-streaked sporangium, and by obscurely tuberculate microspores. A key to the Isoetes of the southeastern coastal plain is presented. Isoetes microvela is suspected to represent an allopolyploid derived from the doubling of a sterile triploid hybrid, most likely I. {\texttimes}bruntonii (= I. engelmannii {\texttimes} I. hyemalis) or I. appalachiana {\texttimes} I. engelmannii. Isoetes microvela is a rare species, presently known from only two populations.},
	keywords = {Coastal plain endemic, Isoetaceae, Isoetes microvela, North Carolina, Pteridophyte},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0013638592\&partnerID=40\&md5=a11db8019e87e506ac5ab36185a8c4de},
	author = {Brunton, D.F. and Britton, D.M.}
}
@article {123,
	title = {Appalachian quillwort (Isoetes appalachiana, sp. nov.; Isoetaceae), a new pteridophyte from the eastern United States},
	journal = {Rhodora},
	volume = {99},
	year = {1997},
	note = {Cited By (since 1996):10Export Date: 11 November 2013Source: Scopus},
	month = {1997///},
	pages = {118 - 133},
	abstract = {Isoetes appalachiana, sp. nov., is an element of the I. engelmannii complex of North America. Its distinct cytology, spore morphology, and distribution are illustrated and described. Although widely distributed in the eastern United States, it appears to be most common in the Appalachian Mountains. Isoetes appalachiana is tetraploid; it is suspected to be an allopolyploid which evolved from the chromosome doubling of I. X altonharvillii, the sterile hybrid between I. engelmannii (s. str.) and I. valida.},
	keywords = {Appalachian Mountains, Isoetaceae, Isoetes appalachiana, Pteridophyte},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0013681071\&partnerID=40\&md5=ca09a6b7a394918dfcfa73009b9ad85b},
	author = {Brunton, D.F. and Britton, D.M.}
}
@article {75,
	title = {Analysis of morphological and anatomical characteristics of Isoetes using isoetes tennesseensis},
	journal = {Brittonia},
	volume = {57},
	year = {2005},
	note = {Cited By (since 1996):3Export Date: 11 November 2013Source: Scopus},
	month = {2005///},
	pages = {167 - 182},
	abstract = {The three known populations of Isoetes tennesseensis were examined to document and analyze their morphological and anatomical characters. Characters examined included velum coverage, lacunae, leaf form and size, sporangial wall cells, and ligule and labium morphology. Three types of morphological patterns were found: stable, variable, and dimorphic. The discovery of dimorphism between mega- and microsporophylls for velum coverage, velum length, sporangium size, and ligule shape is of particular interest. This study presents a model for future work designed to complement current species descriptions and it establishes a baseline for morphological comparisons with other Isoetes. {\textcopyright} 2005, by The New York Botanical Garden Press.},
	keywords = {Dimorphism, Isoetes, Lycopod, Morphological characters, Pteridophyte},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-21744447722\&partnerID=40\&md5=10d5e4181461bf404f341ea4a32c4740},
	author = {Budke, J.M. and Hickey, R.J. and Heafner, K.D.}
}
@article {62,
	title = {Isoetes x novae-angliae (Isoetaceae), an additional hybrid quillwort from New England},
	journal = {Rhodora},
	volume = {108},
	year = {2006},
	note = {Export Date: 11 November 2013Source: Scopus},
	month = {2006///},
	pages = {228 - 241},
	abstract = {Isoetes x novae-angliae D.F. Brunt. \& D.M. Britton, hyb. nov., represents a sterile hybrid between the tetraploid aquatic pteridophytes I. riparia and I. tuckermanii. It is known only from North Easton, Massachusetts although it formerly likely occurred across the state as well as in Connecticut and southern New Hampshire. Determination of the distribution and nomenclature of this taxon also clarifies the status of a number of early 20th century taxonomic innovations.},
	keywords = {Hybrid, Isoetaceae, Isoetes x novae-angliae, New England, Pteridophyte},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33750506895\&partnerID=40\&md5=cfb8fb103c449613c66501a4a452c5a6},
	author = {Brunton, D.F. and Britton, D.M.}
}
@article {67,
	title = {Genetic consequence of restricted habitat and population decline in endangered Isoetes sinensis (Isoetaceae)},
	journal = {Annals of Botany},
	volume = {96},
	year = {2005},
	note = {Cited By (since 1996):19Export Date: 11 November 2013Source: Scopus},
	month = {2005///},
	pages = {1265 - 1274},
	abstract = {{\textbullet} Background and Aims: Isoetes sinensis (Isoeteaceae) is a critically endangered aquatic quillwort in eastern China. Rapid decline of extant population size and local population extinction have occurred in recent years and have raised great concerns among conservationists. {\textbullet} Methods: Amplified fragment length polymorphisms (AFLPs) were used to investigate the genetic variation and population structure of seven extant populations of the species. {\textbullet} Key Results: Eight primer combinations produced a total of 343 unambiguous bands of which 210 (61{\textperiodcentered}2 \%) were polymorphic. Isoetes sinensis exhibited a high level of intra-population genetic diversity (H E) = 0{\textperiodcentered}118; hs = 0{\textperiodcentered}147; I = 0{\textperiodcentered}192; P = 35{\textperiodcentered}2 \%). The genetic variation within each of the populations was not positively correlated with their size, suggesting recent population decline, which is well in accordance with field data of demographic surveys. Moreover, a high degree of genetic differentiation (FST = 0{\textperiodcentered}535; G ST = 0{\textperiodcentered}608; θB = 0{\textperiodcentered}607) was detected among populations and no correlation was found between geographical and genetic distance, suggesting that populations were in disequilibrium of migration-drift. Genetic drift played a more important role than gene flow in the current population genetic structure of I. sinensis because migration of I. sinensis is predominantly water-mediated and habitat range was highly influenced by environment changes. {\textbullet} Conclusions: Genetic information obtained in the present study provides useful baseline data for formulating conservation strategies. Conservation management, including both reinforcement for in situ populations and ex situ conservation programmes should be carefully designed to avoid the potential risk of outbreeding depression by admixture of individuals from different regions. However, translocation within the same regional population should be considered as a measure of genetic enhancement to rehabilitate local populations. An ex situ conservation strategy for conserving all extant populations to maximize genomic representation of the species is also recommended. {\textcopyright} The Author 2005. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved.},
	keywords = {AFLP, Genetic differentiation, Genetic diversity, Isoetes sinensis, Population structure, Pteridophyte},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-27944462292\&partnerID=40\&md5=26404edf2320e666820f93f6dd369ebf},
	author = {Kang, M. and Ye, Q. and Huang, H.}
}
