Isoetes valida

Taxobox
name = "Isoetes valida"
status = G4
status_system = TNC
status_ref = Cite web
publisher =NatureServe
title = Isoetes valida
work = NatureServe Explorer
url = http://www.natureserve.org/explorer/servlet/NatureServe?searchName=Isoetes+valida+
accessdate = 2007-12-20]
regnum = Plantae
divisio = Lycopodiophyta
classis = Isoetopsida
ordo = Isoetales
familia = Isoetaceae
genus = "Isoetes"
species = "I. valida"
binomial = "Isoetes valida"
binomial_authority = (Engelm.) Clute
synonyms = "I. caroliniana"
"I. engelmannii" var. "caroliniana"
"I. engelmannii" var. "valida"

"Isoetes valida", commonly known as the strong quillwort or true quillwort, is an aquatic pteridophyte native to eastern North America. It is found primarily in the Appalachian Mountains from Pennsylvania south to Alabama and Georgia. In addition, one collection of the plant was made in a railway ditch in Wilmington, Delaware in the 1860's, but this was most likely an accidental introduction.citation| last=Brunton| first=Daniel F.; Britton, Donald M.| journal=American Fern Journal| volume=86| number=1| year=1996| pages=16-25| title=Taxonomy and Distribution of Isoetes valida| url=http://links.jstor.org/sici?sici=0002-8444%28199601%2F03%2986%3A1%3C16%3ATADOIV%3E2.0.CO%3B2-V] Citation
last =Taylor
first =W. Carl; Luebke, Neil T.; Britton, Donald M.; Hickey, R. James; Brunton, Daniel F.
contribution =Isoetes caroliniana
year =1993
title =Flora of North America
editor-last =Flora of North America Editorial Committee, eds. 1993+
volume =2
contribution-url =http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250076850
place=New York & Oxford
publisher =Oxford University Press]

References

External links

* [http://plants.usda.gov/java/profile?symbol=ISVA2 Profile at USDA PLANTS Database]
* [http://www.efloras.org/object_page.aspx?object_id=86511&flora_id=1 Range Map from Flora of North America]
* [http://www.efloras.org/object_page.aspx?object_id=86492&flora_id=1 Illustration from Flora of North America (under the synonym "Isoetes caroliniana")]
* [http://www.wikiplants.com/wiki/Strong_Quillwort_Isoetes_valida__Engelm__Clute.ashx wikiPlants - "Isoetes valida (Engelm.) Clute"]