@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 {124,
	title = {Isoetes x carltaylorii (Isoetes acadiensis x Isoetes engelmannii), a new interspecific quillwort hybrid from the Chesapeake Bay},
	journal = {Canadian Journal of Botany},
	volume = {75},
	year = {1997},
	note = {Cited By (since 1996):5Export Date: 11 November 2013Source: Scopus},
	month = {1997///},
	pages = {301 - 309},
	abstract = {Isoetes acadiensis Kott is a plant of the Maritime provinces of Canada and the northeastern United States. In the Chesapeake Bay region, this quillwort has previously ben misidentified as Isoetes riparia Engelm., Isoetes saccharata Engelm., or Isoetes saccharata var. reticulata A.A. Eaton, Isoetes x carltaylorii hyb. nov. is the hybrid between I. acadiensis (2 = 44) and Isoetes engelmannii A. Braun (2n = 22). This is the first report of a hybrid with I. acadiensis. An apparently sterile triploid (2n = 33), this rate plant of freshwater tidal marshes has the predicted range of sizes and megaspore features of a hybrid. This brings to 14 the number of interspecific quillwort hybrids described from North America since 1985.},
	keywords = {Isoetes riparia, Isoetes saccharata, Isoetes saccharata var. reticulata, Megaspores, tidal freshwater rivers},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0030617837\&partnerID=40\&md5=7b586defd299685d84514045c5efee0d},
	author = {Musselman, L.J. and Bray, R.D. and Knepper, D.A.}
}
@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 {91,
	title = {The only quillwort (Isoetes olympica A. Braun) in Syria is threatened with extirpation},
	journal = {Fern Gazette},
	volume = {16},
	year = {2002},
	note = {Cited By (since 1996):3Export Date: 11 November 2013Source: Scopus},
	month = {2002///},
	pages = {324 - 329},
	abstract = {Isoetes olympica A. Braun in Milne is known from only two sites: Bursa in Turkey and Jebel Druze, a chain of extinct volcanoes in Syria. The approximately 100 plants are the only quillworts in Syria; they face a very uncertain future. Because this plant grows in wetlands, it is threatened with immediate destruction by the unprecedented expansion of irrigated agriculture in this region. Before this resource is lost, data were collected on megaspores, microspores, leaf anatomy, chromosome number, and gene sequences.},
	keywords = {Isoetes olympica, Jebel Arab, Jebel Druze, Syria},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33947590679\&partnerID=40\&md5=5b215cea1b2bc2215b866b24945c27ad},
	author = {Musselman, L.J.}
}
@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 {94,
	title = {Ornamentation of Isoetes (Isoetaceae, Lycophyta) microspores},
	journal = {Botanical Review},
	volume = {68},
	year = {2002},
	note = {Cited By (since 1996):6Export Date: 11 November 2013Source: Scopus},
	month = {2002///},
	pages = {474 - 487},
	abstract = {More than any other taxonomic character, megaspores have been used in the genus Isoetes (known by the English common name of "quillwort"), despite the fallacy of a single-character taxonomy. Microspores, on the other hand, have been largely neglected in taxonomic schemes. Like megaspores, terms for microspore ornamentation (also known as "sculpturing") have not been standardized. I examined microspore ornamentation, including both macroornamentation and microornamentation, of 52 taxa from Africa, Asia, Australasia, Europe, North America, and South America with the scanning electron microscope. Macroornamentation is discernible with light microscopy; microornamentation requires scanning electron microscopy. Ornately sculptured spores were much more frequent than were laevigate or psilate patterns: 21 taxa had an echinate pattern; 19 had an aculeate pattern; 6 were cristate; 5 were psilate; and 1 was laevigate. The proximal and distal ridges and surfaces may vary in both the type and density of ornamentation, Distinct macroornamentation patterns characterize certain species groups. Microornamentation types include granulate, bacillate, fimbriate, and filamentose: of the microspores I examined, virtually all were partially granulate; 11 were bacillate; 4 were fimbriate; and 1 was filamentose. Based on this limited sampling, species with a higher ploidy level often have larger microspores, but no clear relationship between microspore ornamentation and ploidy level was established, nor were any geographical or ecological trends clear. Like megaspores, microspore ornamentation is strongly convergent. Although microspores are often attached to megaspores, the role of spore ornamentation in coordinated dispersal remains unclear.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0038477121\&partnerID=40\&md5=08737b87419374ccf0b09e2b6b6699d8},
	author = {Musselman, L.J.}
}
@article {48,
	title = {The genus Isoetes L. (Isoetaceae, Lycophyta) in South-Western Asia},
	journal = {G{\"u}neybati{dotless} Asya{\textquoteright}daki Isoetes L. (Isoetaceae, Lycophyta) cinsiTurkish Journal of Botany},
	volume = {32},
	year = {2008},
	note = {Cited By (since 1996):6Export Date: 11 November 2013Source: Scopus},
	month = {2008///},
	pages = {447 - 457},
	abstract = {Quillworts or {\c C}im Eǧreltisi, species of the genus Isoetes L. in Turkey and the Levant, are poorly studied despite extensive floristic studies in the region. The Flora of Turkey lists 4 taxa: Isoetes olympica A.Braun (2n = 22), I. histrix Bory var. histrix (2n = 20), I. subinermis (Bory) Cesca \& Peruzzi [=I. histrix Bory var. subinermis Durieu (2n = 22)] and I. duriei Bory (2n = ca. 121). An additional species, I. anatolica Prada \& Rolleri, was described in 2005 from Bolu province, and we report the first count for this species, 2n = 22. In Syria and Lebanon 2 species are known: I. olympica from a site in Syria and a known but undescribed plant from Akkar province (Lebanon) and adjacent Syria (2n = 22, first count). A preliminary molecular phylogeny for these species is presented; their distribution and cytology are discussed. The taxonomy and nomenclature of the I. histrix and I. duriei groups need considerable further study. The first hybrids for the region are documented. {\textcopyright} T{\"U}B{\.I}TAK.},
	keywords = {Chromosome counts, {\c C}im eǧreltisi, Lebanon, Megaspores, Molecular phylogeny, Quillworts, Syria, Turkey},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-77950205998\&partnerID=40\&md5=4a115f97b98f68919f0545844f4df99d},
	author = {Bolin, J.F. and Bray, R.D. and Keskin, M. and Musselman, L.J.}
}
@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.}
}
@article {23,
	title = {Microspore wall morphogenesis of isoetes piedmontana (pfeiffer) reed},
	journal = {International Journal of Plant Sciences},
	volume = {172},
	year = {2011},
	note = {Cited By (since 1996):1Export Date: 11 November 2013Source: Scopus},
	month = {2011///},
	pages = {856 - 861},
	abstract = {Microspore wall morphogenesis of Isoetes piedmontana was studied with SEM and TEM. The microspore wall consists of four layers: Perispore, paraexospore, exospore, and endospore. Immediately after meiosis, the paraexospore forms around the microspore. The exospore forms next between the cell membrane and the paraexospore. Finally, the perispore is deposited on the paraexospore, and the endospore is formed within the exospore. The paraexospore, exospore, and endospore are largely derived from the cytoplasm of the microspore. The sporopollenin materials of the perispore are derived from the secretory tapetal cells along the inner sporangial wall. {\textcopyright} 2011 by The University of Chicago. All rights reserved.},
	keywords = {Endospore, exospore, Lycophyta, Microspores, Paraexospore, perispore},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84860412528\&partnerID=40\&md5=f17f8f91543e8f1bcb906784afc23b4c},
	author = {Al-Arid, K. and Bray, R.D. and Musselman, L.J.}
}
