quillwort

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quillwort

quillwort common name for several species of the plant genus Isoetes, which grow in ponds, slow streams, and swampy places. See Lycopodiophyta .

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"quillwort." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 21 Dec. 2009 <http://www.encyclopedia.com>.

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Isoetes

A Dictionary of Plant Sciences | 1998 | | Â© A Dictionary of Plant Sciences 1998, originally published by Oxford University Press 1998. (Hide copyright information) Copyright

Isoetes (quillworts) See ISOETACEAE.

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MICHAEL ALLABY. "Isoetes." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 21 Dec. 2009 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Isoetes." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (December 21, 2009). http://www.encyclopedia.com/doc/1O7-Isoetes.html

MICHAEL ALLABY. "Isoetes." A Dictionary of Plant Sciences. 1998. Retrieved December 21, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-Isoetes.html

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Isoetaceae

A Dictionary of Plant Sciences | 1998 | | Â© A Dictionary of Plant Sciences 1998, originally published by Oxford University Press 1998. (Hide copyright information) Copyright

Isoetaceae A family of Pteridophyta, mostly aquatic vascular cryptogams with 2 types of spore (see HETEROSPORY). They have a short, stout, basal stock from which arise the roots below, and a dense rosette of usually tubular, quill-like leaves, which bear the sporangia sunken in their expanded bases. The first leaves of the season produce megasporangia in their bases which contain large megaspores that develop into female gametophytes. Microsporangia are produced in later leaves and contain tiny microspores which develop into minute male gametophytes. There are 2 genera, Isoetes (quillworts), with some 70 species of cosmopolitan distribution, and Stylites, with 1 species in the Peruvian Andes.

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MICHAEL ALLABY. "Isoetaceae." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 21 Dec. 2009 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Isoetaceae." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (December 21, 2009). http://www.encyclopedia.com/doc/1O7-Isoetaceae.html

MICHAEL ALLABY. "Isoetaceae." A Dictionary of Plant Sciences. 1998. Retrieved December 21, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-Isoetaceae.html

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	Isoetes melanopoda spp. silvatica (subsp. nov.), a New Quillwort (Isoetaceae) From Eastern North America Magazine article from: Castanea; 3/1/2006; ; 700+ words ; ABSTRACT Isoetes melanopoda, a diploid species of ephemeral prairie wetland swales primarily in central North America, has also been found in swamp forests over a wide area of eastern North America in recent years. Determination of certain morphological and ecological characteristics (leaf width,
	PTERIDOPHYTES OF NORTHEAST ALABAMA AND ADJACENT HIGHLANDS. Magazine article from: Journal of the Alabama Academy of Science; 10/1/2000; ; 700+ words ; ...Engelm.) A.A. Eaton, Scouring-rush DIVISION LYCOPODIOPHYTA ISOETACEAE (Quillwort Family) Isoetes butleri Engelm., Glade Quillwort; Butler's Quillwort.* S2 I. engelmannii A. Br., Appalachian Quillwort; Engelmann's Quillwort...
	'THE BEST OF THE BEST' Newspaper article from: Herald News, The (Joliet, IL); 7/31/2006; ; 700+ words ; ...Dalea foliosa (left), and Butler's quillwort, or Isoetes butleri (right), are...the leafy prairie clover and Butler's quillwort - have been discovered on the property...management activities." The Butler's quillwort, or Isoetes butleri, is designated...
	Namaqua pool offers elusive surprise; Botanic researchers find rare quillworts.(News) Newspaper article from: Cape Argus (South Africa); 5/19/2009; 700+ words ; ...instantly recognisable as a type of quillwort. However, a closer look told them the...pools - such as the gnamma where this new quillwort was found - are vulnerable to climate...occurred frequently. "Perhaps the new quillwort is one such survivor, and perhaps there...
	North Carolina Magazine article from: Castanea; 6/1/2002; ; 700+ words ; ...by Brunton et al. (1996), I. virginica is a tetraploid quillwort of intermittent woodland streams and low, wet wooded areas...Reference] BRUNTON, D.F. and D.M. BRITON. 1999. Rush quillwort (Isoetes junciformis, sp. nov.), a new pteridophyte...
	Foreign invader threatens loch Newspaper article from: The Scotsman; 5/13/2002; ; 700+ words ; ...more food to grow. Miss Macleod added: "Some of the loch's native aquatic plants, like water lobelia, shoreweed and quillwort, are quite small, rooted plants that grow on the bottom and display a compact, rosette growth form. It is these native...
	Warm welcome Magazine article from: Natural History; 3/1/2001; ; 700+ words ; ...apparently having served as a feeding platform just above the water level. It held a single scrap of food: a frozen aquatic quillwort, still whole and green. The main nest chamber, roomy enough to permit us to raise our heads and pass a camera back and...
	ENVIRONMENTAL LAW IS STILL A LANDMARK.(MAIN) Newspaper article from: Albany Times Union (Albany, NY); 12/27/1998; 700+ words ; ...and the feared alligator. Few realized it also would protect the snail darter, kangaroo rat, Delhi fly, black-spored quillwort and the much-maligned furbish lousewort (a flowering plant in Maine). When Nixon signed the bill, there were 109 species...
	Findings from University of Bonn provide new insights into nucleic acids research. Newspaper article from: Health & Medicine Week; 11/16/2009; 700+ words ; ...more evolutionary plasticity than those of animals. We analysed the first mitochondrial DNA (mtDNA) of a lycophyte, the quillwort Isoetes engelmannii, which is separated from seed plants by more than 350 million years of evolution." "The Isoetes mtDNA...
	Ozark Mushrooms Magazine article from: Natural History; 2/1/2007; ; 700+ words ; ...substantial wetlands along streams and around ponds. Such cliff-top depressions are also the exclusive home for limestone quillwort, a spore-producing species related to the ferns. It's a plant you would have to search out between mid-March and mid...