@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 {65,
	title = {Ecology and conservation of the endangered quillwort Isoetes sinensis in China},
	journal = {Journal of Natural History},
	volume = {39},
	year = {2006},
	note = {Cited By (since 1996):2Export Date: 11 November 2013Source: Scopus},
	month = {2006///},
	pages = {4069 - 4079},
	abstract = {Isoetes sinensis Palmer is an East Asia endemic fern that faces impending extirpation from the expansive area of Mainland China. Presently, only two natural populations are known to exist in this vast region. Both populations have decreased by about 50\% within the last 4 years. This reduction is most probably related to the decline in the size of the wetlands since reproductive activity, spore production, and recruitment were noticeably lower at the microsites occurring in smaller ponds. The decline in population size seems to be associated with succession from marsh to dry land at the habitats of both populations. The study revealed that individuals in both populations produced copious numbers of spores suggesting adequate fecundity, furthermore high levels of spore germination were obtained in laboratory experiments. However, inefficient spore dispersal appears to have contributed to the limited spread of the species. The sex ratio in both populations was male-biased. Several factors are identified here as posing a threat to Isoetes sinensis populations in China, chiefly the loss of habitat due to infrastructure construction and competition with adventive weed species for establishment on available sites. Disturbance by introduced mammals during browsing and trampling by livestock farm workers, as well as tourists, further contribute to the diminishing numbers of Isoetes sinensis at the study sites. {\textcopyright} 2005 Taylor \& Francis.},
	keywords = {China, Conservation, Ecology, Isoetes sinensis, Rare fern},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33646483501\&partnerID=40\&md5=91677e55ca7f81da659db6f0f6afe260},
	author = {Wang, J.-Y. and Gituru, R.W. and Wang, Q.-F.}
}
@article {50,
	title = {Spore morphology of Iso{\"e}tes (iso{\"e}taceae) from China},
	journal = {Journal of Systematics and Evolution},
	volume = {46},
	year = {2008},
	note = {Export Date: 11 November 2013Source: Scopus},
	month = {2008///},
	pages = {479 - 489},
	abstract = {Micromorphological characters of mega- and microspores of five Iso{\"e}tes species from China were observed under scanning electron microscope (SEM). Megaspores of I. hypsophila have a levigate ornamentation, and are 358 μm in diameter (mean, n=30), microspores of this species have a gyrus ornamentation, and are 22 μm in length (mean, n=30); megaspores of I. yunguiensis have a cristate-reticulate ornamentation, with a size of 390 μm in diameter (mean, n=30), while microspores nearly smooth with some fine granulates, and with a size of 22 gm in length (mean, n=30); megaspores of I. taiwanensis are tuberculate and 312 μm in diameter (mean, n=30), echinate microspores are 24 μm in length (mean, n=30); cristate megaspores of I. sinensis are 409 μm in diameter (mean, n=30), and echinate microspores are 28 μm in length (mean, n=30); megaspores of I. orientalis have a cristate-reticulate ornamentation, with diameter of 420 μm (mean, n=30), microspores of this species have an echinate-tuberculate ornamentation with a size of 34 μm in length (mean, n=30). Based on the morphological characters of spores and chromosome numbers among taxa, it was found that mean spore size in each species of Iso{\"e}tes generally reflected the ploidy level. I. hypsophila, I. yunguiensis and I. taiwanensis, with smaller mean spore size, are diploidy with 2n=22; I. sinensis (2n=44) and I. orientalis (2n=66), with larger mean spore size, are polyploidy. The spore morphology of Iso{\"e}tes still plays an important role in identification and classification of Iso{\"e}tes from China.},
	keywords = {China, Evolution, Isoetes, Origin, Spore morphology},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-57349117891\&partnerID=40\&md5=f310ff0165e440259efb4b7c64314743},
	author = {Liu, X. and Liu, H. and Wang, Q.-F.}
}
