@article {99,
	title = {The genus Isoetes (Isoetaceae: Pteridophyta) in Mallorca, Balearic Islands},
	journal = {Fern Gazette},
	volume = {16},
	year = {2001},
	note = {Export Date: 11 November 2013Source: Scopus},
	month = {2001///},
	pages = {205 - 208},
	abstract = {The distribution and previously confused recording history of the genus Isoetes on Mallorca, Balearic Islands, is documented and clarified. Two species, I. duriei and I. histrix are confirmed as present.},
	keywords = {Conservation, Distribution, Iso{\"e}tes duriei, Iso{\"e}tes histrix, Quillwort},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0039740289\&partnerID=40\&md5=86b1fbc1ac46b33dff89643989686e21},
	author = {Rumsey, F.J. and Vogel, J.C. and Stafford, P.J.}
}
@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 {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 {103,
	title = {Basal meristem and root development in Isoetes asiatica and Isoetes japonica},
	journal = {International Journal of Plant Sciences},
	volume = {162},
	year = {2001},
	note = {Cited By (since 1996):3Export Date: 11 November 2013Source: Scopus},
	month = {2001///},
	pages = {1225 - 1235},
	abstract = {We studied the anatomy of the basal meristem and root development in Isoetes asiatica and Isoetes japonica to better understand the Isoetes rhizomorph, an enigmatic organ. The basal (root-producing) meristem of the rhizomorph is continuous with the lateral meristem, and both comprise a single meristem. The basal meristem with a layer of thin initials has both organogenetic and thickening meristem attributes. A combination of these attributes indicates that the basal meristem is distinctive among the vascular plant meristems, including cambium. The root primordia develop from young derivative cells organized in three to four radial fines, and their main body is composed of a three-layered apical meristem. The primordia, unlike the roots, produce a small number of derivative cells as well as a procambium and future root cap, and they do not form a cortex and epidermis. Prior to developing into roots, the primordia are shifted closer to the corm surface through further development of cortical tissues from the basal meristem and sloughing of surface cells. This unique developmental pattern is established through the subendogenous origin of the second embryonic root and the endogenous origin of the third root. The meristem and pattern of root development in Isoetes is compared with that indicated for the lepidodendrid and isoetalean rhizomorphs and contrasted with that in the Selaginella rhizophore. The comparison seems not to support the interpretation of the roots as leaf homologues.},
	keywords = {Cambium, Development, Isoetes, Lepidodendrids, Meristem, Rhizomorph, Rhizophore, Root},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0034749638\&partnerID=40\&md5=1887916a18c476c09780d6d6ad7f78b6},
	author = {Yi, S.-Y. and Kato, M.}
}
@article {104,
	title = {Morphology of labium/velum in Isoetes L.},
	journal = {Phytomorphology: An International Journal of Plant Morphology},
	volume = {51},
	year = {2001},
	note = {Export Date: 11 November 2013Source: Scopus},
	month = {2001///},
	pages = {57 - 61},
	abstract = {Comparison is made between the unique structure labium/velum of Isoetes and the indusium of ferns. All three structures are derived from a common ancestor. The hypothesis is based on the study of labium and velum in three Indian species of Isoetes.},
	keywords = {Common ancestor, Ferns, Lycopods},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0035240804\&partnerID=40\&md5=ac0eecd2b088c84348c60a89a9cc1939},
	author = {Sharma, B.D. and Purohit, S.N.}
}
@article {1,
	title = {The genus Isoetes L. (Lycophyta, Isoetaceae): synthesis of karyological data},
	journal = {Webbia},
	volume = {56},
	year = {2001},
	chapter = {201},
	author = {Troia, Angelo}
}
