@article {121,
	title = {Soil in relation to distribution and growth performance of Isoetes dixitei Shende in the Western Ghats of India},
	journal = {Tropical Ecology},
	volume = {38},
	year = {1997},
	note = {Export Date: 11 November 2013Source: Scopus},
	month = {1997///},
	pages = {317 - 322},
	abstract = {Soils collected from the natural habitats of I. dixitei Sende have been analysed for the available plant nutrients. The amount of nutrients have then been correlated with the growth performance of this species. The preceding analysis reveals that the habit of plants of I. dixitei are influenced by many overriding soils. However, the occurrence of stunted growth of some populations may be attributed to a comparatively high zinc and copper contents in the soils since these two minerals have been found to exhibit a significant though negative correlation with the plant lengths of the various populations of I. dixitei.},
	keywords = {Growth performance, I. dixitei, Soil},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0031390381\&partnerID=40\&md5=8ddd377723a6deeecdee3a6d2352cba0},
	author = {Wagai, S.O. and Srivastava, G.K. and Srivastava, M.}
}
@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 {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 {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 {125,
	title = {Plant size and fertility of Isoetes lacustris L. in 20 lakes of Scandinavia: A field study},
	journal = {Archiv fur Hydrobiologie},
	volume = {139},
	year = {1997},
	note = {Cited By (since 1996):7Export Date: 11 November 2013Source: Scopus},
	month = {1997///},
	pages = {171 - 185},
	abstract = {A relationship between the individual size and fertility of Isoetes lacustris in the habitat centres of different lakes was found. The maximum (mean) rosette size was 202.2 cm2 and the maximum (mean) number of macrospores in a sporangium was 113.4; the minimum (mean) values were 13.8 cm2 and 30.6 spores. Further correlations between vitality and fertility parameters were established. It is suggested that the main ecological factors responsible for the differences found in the lakes are effects of climate (including water temperature and duration of seasonal growth), which cause the differences in rosette size and fertility. The percentage of individuals with fertile sporangia was lowest in the slightly humic lakes with boreal climate and short summers, and highest in the clear lakes with temperate climate and long summers. Isoetes individuals showed increased size with depth.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0343052607\&partnerID=40\&md5=3be747f4cb73f24bc9d8880018c16bd1},
	author = {V{\"o}ge, M.}
}
@article {126,
	title = {Number of leaves per rosette and fertility characters of the quillwort (Isoetes lacustris L.) in 50 lakes of Europe: A field study},
	journal = {Archiv fur Hydrobiologie},
	volume = {139},
	year = {1997},
	note = {Cited By (since 1996):10Export Date: 11 November 2013Source: Scopus},
	month = {1997///},
	pages = {415 - 431},
	abstract = {Isoetes lacustris L. was studied in 35 lakes in the main area of distribution (N and W Europe), plus some other lakes outside of this area, where the species is present. By using SCUBA equipment fertile plants were selected randomly and several morphological and fertility characters were studied. It was found that there was a relationship between: a) the (mean) number of leaves per rosette, and the (mean) number of spores per macrosporangium, b) the number of leaves, and the number of macrosporangia per plant. The number of spores per macrosporangium is related directly to the percentage of fertile plants in the part of the population studied. A low number of leaves per rosette is a fair indication of a low number of macrospores in a sporangium and also a low number of macrosporangia per plant, anti the low number of spores points to a low percentage of fertile individuals in the part of the population studied. It is suggested that the often rapid decline of quillwort in lakes of Central Europe may be a self-accelerating process. In the N European lakes, numbers of leaves and spores have an inverse relationship to the colour of the water. In the W European lake sites, the height of the rosettes is correlated to the Secchi depth. No relationship between plant features and water characteristics (pH and conductivity) were found.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0342617829\&partnerID=40\&md5=e5b61ab9a7b00c72dbe6bce9554fbc2f},
	author = {V{\"o}ge, M.}
}
