About: Helenium virginicum     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : dbo:Eukaryote, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)
QRcode icon
http://dbpedia.demo.openlinksw.com/describe/?url=http%3A%2F%2Fdbpedia.org%2Fresource%2FHelenium_virginicum&invfp=IFP_OFF&sas=SAME_AS_OFF

Helenium virginicum is a rare species of flowering plant in the aster family known by the common name Virginia sneezeweed. It occurs in the United States, where it has a disjunct distribution; it is known only from Virginia and Missouri. It is limited to a specific type of habitat and it is threatened by modification of this habitat. It was federally listed as a threatened species of the United States in 1998. The greatest threat to this species is habitat modification. Destruction of the sinkhole habitat could lead to the extinction of the species.

AttributesValues
rdf:type
rdfs:label
  • Helenium virginicum (en)
rdfs:comment
  • Helenium virginicum is a rare species of flowering plant in the aster family known by the common name Virginia sneezeweed. It occurs in the United States, where it has a disjunct distribution; it is known only from Virginia and Missouri. It is limited to a specific type of habitat and it is threatened by modification of this habitat. It was federally listed as a threatened species of the United States in 1998. The greatest threat to this species is habitat modification. Destruction of the sinkhole habitat could lead to the extinction of the species. (en)
dcterms:subject
Wikipage page ID
Wikipage revision ID
Link from a Wikipage to another Wikipage
Link from a Wikipage to an external page
sameAs
dbp:wikiPageUsesTemplate
authority
genus
  • Helenium (en)
species
  • virginicum (en)
status
  • G3 (en)
status system
  • TNC (en)
has abstract
  • Helenium virginicum is a rare species of flowering plant in the aster family known by the common name Virginia sneezeweed. It occurs in the United States, where it has a disjunct distribution; it is known only from Virginia and Missouri. It is limited to a specific type of habitat and it is threatened by modification of this habitat. It was federally listed as a threatened species of the United States in 1998. At the time the plant received federal protection it was known from 28 populations in two Virginia counties. Soon after, a population of similar plants was found in Missouri and by genetic analysis were confirmed to be of the same species. Searches turned up a total of 44 occurrences in six counties in the Ozark Highlands of Missouri. This disjunct distribution was probably caused by the cleaving of the species' geographical range during Pleistocene glaciation, leaving two relict ranges. Helenium virginicumis similar to and often mistaken for Helenium autumnale, the common sneezeweed. It is a perennial herb generally growing to a maximum height between 70 centimeters and 1.1 meters (28-44 inches), but it is known to reach 1.7 meters (68 inches or 5 2/3 feet) at times. There is a basal rosette of leaves and an erect, winged stem lined with lance-shaped leaves that become smaller toward the top of the stem. The inflorescence has several flower heads, each with a spherical disc covered with disc florets and lined with yellow ray florets just over a centimeter (0.4 inches) long. Blooming occurs in July through October. The plant is self-incompatible. Helenium virginicum only grows near sinkhole ponds in the Ozark Highlands of Missouri and the western margin of the Blue Ridge Mountains in Virginia. These ponds are lined with clay or bedrock and are filled with water from about January to June or July each year. They may take the form of actual holes or they may be more like very wet meadows. The ponds are often actively grazed by cattle and can tolerate disturbance. The hydrology of the sinkholes varies seasonally and year to year, causing a similar fluctuation in the population and recruitment of the sneezeweed. The greatest threat to this species is habitat modification. Destruction of the sinkhole habitat could lead to the extinction of the species. (en)
gold:hypernym
prov:wasDerivedFrom
page length (characters) of wiki page
foaf:isPrimaryTopicOf
is Link from a Wikipage to another Wikipage of
is Wikipage redirect of
is foaf:primaryTopic of
Faceted Search & Find service v1.17_git139 as of Feb 29 2024


Alternative Linked Data Documents: ODE     Content Formats:   [cxml] [csv]     RDF   [text] [turtle] [ld+json] [rdf+json] [rdf+xml]     ODATA   [atom+xml] [odata+json]     Microdata   [microdata+json] [html]    About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data] Valid XHTML + RDFa
OpenLink Virtuoso version 08.03.3330 as of Mar 19 2024, on Linux (x86_64-generic-linux-glibc212), Single-Server Edition (378 GB total memory, 56 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software