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current botanical survey of Centaurea genus; cornflowers originally from Eurasia
basic information and images of the cornflower, Centaurea genus; some almost extinct; others are noxious weeds
an abstract that concerns the Centaurea tchihatcheffii which may shortly become extinct.
abstract summarizing the methods and results of various attempts at in vitro plant regeneration of the nearly extinct cornflower (knapweed) Centaurea tchihatcheffii
various images and diagrams of the noxious weed infiltrating grazing lands and parks in USA spotted knapweed
more images of the noxious weed, known as knapweed of the Centaurea genus
a basic scientific profile of this invasive species and what can be done to prevent or eradicate it; even though this species is not a spiny thistle, it is a thistle species. Therefore, it will spread rapidly.
would be an excellent resource for students; supplement with USDA information
another website that provides excellent information for student work
excellent images, especially of the base of the plants where the leaf rosettes grow
gives off toxins that kill plants around it; more information about the noxious weed species of this Centaurea genus
an excellent primer to use for general identification of the spotted knapweed from primary leaves to flowers
images to use to spot this noxious weed in full growth; that is a bit too late
Published June 10, 2008 11:49 am - University of Missouri specialists warn that spotted knapweed is highly invasive and a threat to area pastures.
this is the originating article, along with the Tryangulation blog about one of the few cornflowers (Centaurea genus) that may shortly become extinct; such a paradox I had to write a blogpost about it
I read this blog posting about this Centaurea tchihattcheffi form of cornflower that may become extinct shortly, just a few days before the regional agriculture newspaper reported that an invasive species of Centaurea was being labeled as a noxious weed in Missouri for the first time. SUCH A PARADOX must be noted
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discussion of a species from Eurasia; some are almost extinct while others are invasive species let loose in countries where they did not develop any natural pests.
Updated on 2008-11-12
Created on 2008-06-25
Category: Science
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