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Topic: Quillwort

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	Isoetes spp., quillworts
		Quillworts reproduce by spores that are produced in the leaf bases.
		Quillworts grow from shallow to moderate depths in lakes and slowly-flowing rivers on sandy substrates, mud, and wet ground.
		Quillwort species are distinguished from one another by microscopic examination of their spores, the spore sac, and velum.
	www.ecy.wa.gov /programs/wq/plants/plantid2/descriptions/iso.html (349 words)

	Rare and Unusual Native Plants (Site not responding. Last check: 2007-11-03)
		The leaves of Nuttall's quillwort are hollow and quill-like, arising from a central perennial corm.
		Flowering quillwort is considered a species of local significance by the Yerba Buena Chapter of CNPS due to its restricted occurrence in the county.
		Nuttall's quillwort is not currently considered a species of local significance, although its restricted occurrence here and the limited availability of suitable habitat in the chapter area might be cause for reconsideration.
	www.cnps-yerbabuena.org /rarities.html (983 words)

	Lake Quillwort, Isoetes lacustris
		Quillworts are considered by some to be the last remnant of the fossil tree lycopods, with which they share some unusual features including the development of both wood and bark, a modified shoot system acting as roots, bipolar growth, and an upright stance.
		Identifiable as a Quillwort by its small size, multiple spiny basal leaves, and its habitat.
		This quillwort is almost always found submersed in water.
	www.rook.org /earl/bwca/nature/ferns/isoeteslac.html (373 words)

	Quillwort - Wikipedia, the free encyclopedia
		Quillworts are plants of the genus Isoetes in the class Isoetopsida and order Isoetales.
		Quillworts are mostly aquatic or semi-aquatic in clear ponds and slow-moving streams, though several (e.g.
		Quillwort leaves are hollow and quill-like, arising from a central corm.
	en.wikipedia.org /wiki/Quillwort (302 words)

	The New Brunswick Museum (Site not responding. Last check: 2007-11-03)
		Worldwide there are probably about 150 species, but quillwort taxonomy is in a state of flux and authorities have argued that the number of species may be as low as 60 or as high as 300.
		Quillworts are found in freshwater lakes, ponds, rivers and streams by wading, swimming or viewing from boats.
		The Acadian Quillwort is known to hybridize with the Lake Quillwort.
	www.gnb.ca /0130/english/stories20.html (1551 words)

	Quillwort
		Quillworts are plants of the genus Isoëtes and Stylites, in the family Isoëtaceae, in the order Isoëtales.
		This order is sometimes placed in the class Isoëtopsida, sometimes in the Selaginellopsida or Lycopsida.
		Quillwort species are very difficult to distinguish by general appearance.
	www.ebroadcast.com.au /lookup/encyclopedia/qu/Quillwort.html (68 words)

	Endangered Species - Species ID
		Quillwort leaves are hollow, quill-like, and reveal cross-like partitions when cut in cross section.
		The leaves of fl-spored quillwort are stiff to arching and usually less than 8 cm (3in) tall, but generally longer than those of mat-forming quillwort (5 cm; also described in this manual).
		The difference in habit- spreading for mat-forming quillwort, and condensed clusters for fl-spored quillwort- is probably the most useful way of initially distinguishing between these two related species.
	www.sas.usace.army.mil /pblqlwrt.htm (305 words)

	GRANITE OUTCROP PLANTS Isoetes melanospora, I. tegetiformans, Amphianthus pusillus (Site not responding. Last check: 2007-11-03)
		Thirty-eight percent of the total population of fl-spored quillwort, 17 percent for amphianthus, and 9 percent for mat-forming quillwort have been destroyed by this major threat.
		The genetic integrity of fl-spored quillwort is threatened due to its frequent hybridization with Isoetes piedmontana and subsequent introgression.
		Black-spored quillwort and amphianthus are officially listed as endangered by the Georgia Department of Natural Resources and are therefore afforded legal protection in the State under the Wildflower Preservation Act of 1973.
	www.fws.gov /endangered/i/s/sas02-.html (1809 words)

	Louisiana Quillwort - Wikipedia, the free encyclopedia
		The Louisiana Quillwort (Isoetes louisianensis) is a small, grass-like aquatic plant of the family Isoetaceae.
		The Louisiana Quillwort occurs predominantly on sand and gravel bars on small to medium-sized streams.
		The Louisiana Quillwort was discovered recently, in 1972, and was listed as an endangered species in 1992.
	en.wikipedia.org /wiki/Louisiana_Quillwort (184 words)

	Black-spored Quillwort (Isoetes melanospora) Species Profile
		Black-spored quillwort is a perennial fern ally that forms small tufts of erect to spreading, linear leaves, 2.5 to 8 cm in height from a spirally arranged bulbous rootstock.
		Black-spored quillwort often hybridizes with Piedmont quillwort (Isoetes piedmontana) in habitats which are ecologically intermediate between the two species.
		Black-spored quillwort is endemic to shallow, flat-bottomed, rock rimmed solution pools that are formed in depressions on granitic outcrops (Patrick et.
	www.gsrcorp.com /tes/ISME3/isme3_text.html (317 words)

	Lilaea scilloides - flowering quillwort (Site not responding. Last check: 2007-11-03)
		Flowering quillwort is an annual plant with tufts of onion-like leaves and inconspicuous green flower spikes.
		The leaf base is surrounded by a sheath of leafy tissue.
		Flowering quillwort is not common in Washington or British Columbia, but when present is typically found growing in shallow water or on coastal tide flats.
	www.ecy.wa.gov /programs/wq/plants/plantid2/descriptions/lilaea.html (284 words)

	Spiny Spore Quillwort, Isoetes tenella
		Other common names include: Spiny-spore Quillwort, Spring Quillwort (UK), Gulgrøn Brasenføde (Dan), Muda-Lahnarohi (EE), Vaalealahnanruoho (Fin), Mjúkur álftalaukur (Is), Stachelsporiges Brachsenkraut (Ger), Mjukt brasmegras (Nor), Poryblin kolczasty (Pol), Vekt braxengräs, isländskt braxengräs, taggsporigt braxengräs (Swe)
		Distinguished from the closely related Lake Quillwort (Isoetes lacustris) by its much shorter leaves.
		Lake Quillwort leaves grow to 8" in length while the leaves of this species do not exceed 3½".
	www.rook.org /earl/bwca/nature/ferns/isoetesten.html (376 words)

	Species Profile (Site not responding. Last check: 2007-11-03)
		States in which the Louisiana quillwort is known to occur: Louisiana, Mississippi
		ETWP; Determination of Endangered Status for the Plant Isoetes louisianensis (Louisiana Quillwort); 57 FR 48741 48747
		ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.
	ecos.fws.gov /SpeciesProfile?spcode=S00T (174 words)

	PLANTS Profile for Isoetes melanopoda (blackfoot quillwort) \| USDA PLANTS
		PLANTS Profile for Isoetes melanopoda (flfoot quillwort)
		Click on a scientific name below to expand it in the PLANTS Classification Report.
		Isoetes melanopoda Gay & Durieu ex Durieu – flfoot quillwort
	plants.usda.gov /java/profile?symbol=ISME (188 words)

	Primitive Plants - Quillworts
		Quillworts are small, spore-bearing, vascular plants, with narrow elongated leaves, which are microphyllous.
		The leaves contain air chambers that take up carbon dioxide.
		Can you help with the location or a photo of Isoetes kirkii
	www.hiddenforest.co.nz /plants/quillworts/quillworts.htm (129 words)

	Appalachian Quillwort (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-11-03)
		Type locality: Horse Leg Creek, a tributary of the Coosa River, Floyd County, Georgia
		Comments: Alvan W. Chapman (1809-1899), a physician and botanist from Florida collected the first specimen of Appalachian quillwort in Rome, Floyd County, Georgia in August 1872.
		Description: Amphibious plant; corm fleshy, roots form lobed base; a few leaves, coarse, 10 - 15 inches long, slender, with 4 peripheral strands, light green; oval sporangia; velum narrow; thick megaspores 0.48 mm - 0.46 mm in diameter; microspores 0.028 mm - 0.031 mm long, smooth
	geocities.com.cob-web.org:8888 /zvezuk/Ch1/isap.html (153 words)

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