Cirsium Web Sites

Please contact me if any of my links appear to be malfunctioning or if you just want to talk about thistles.

This page recieved the angiosperm webpage award from Links²Go. Clicking on the icon will take you to their angiosperm search webpage.

Quick Index

My Research
Herbal Information
American Species of Cirsium
European and Asian species of thistles
Invasive Weeds:
General Information on Thistle Biocontrol
People in Thistle Research
Pollen

THISTLE GROWERS: if you are interested in seeds or have some seeds to share let me know and I will post that information here. Also I get a great deal of requests for "Scottish thistle" to be used as a floral decoration. If you can supply small quantities of florist grade thistle, please contact me. Onopordum is the most common genus requested, but Cynara would probably be the most pleasing to the purchaser.

My Research

I am working on resolving small taxonomic issues of the western US thistle species. My master's thesis concerned the resolution of Cirsium ochrocentrum and it's new subspecies C. ochrocentrum ssp. martinii (published in Novon). My PhD dissertation concerned the eleven taxa of the Cirsium arizonicum complex. If you are looking for information about the variation of characters in thistle species, please contact me for more information. I would be interested in collaborating on any type of thistle research. My other interests are the statistics of variability.

Invasive Weeds

Cirsium arvense

Cirsium arvense: TNC-ESA

Cirsium arvense: Bibliography on control

Cirsium arvense: introductory info.

Cirsium arvense: CWMA site

Cirsium arvense: USU site

Canadians Controlling Canada Thistle

Invasive Exotic Weeds of Canada: Fact Sheet 8

Cirsium vulgare

Cirsium vulgare: Bull thistle pictures

Biological control of Bull thistle

BCAdventure Bull thistle page

Carduus

Nodding thistle references (Carduus nutans)

Knapweeds, Starthistles, and Basketflowers of New Mexico

Carduus pycnocephalus

Acroptilon

Establishment of the Rosette Weevil

Russian Knapweed (Acroptilon repens)

Biocontrol of Russian Knapweed

Ecology and Distribution of Acroptilon repens (L.)D.C., Asteraceae

General Information on Biocontrol and Weeds

If you are looking for information on Biocontrol, choose a resource that was written for your part of the world, or at least your hemisphere of the globe.

International Institute of Biological Control - (IIBC)

Candidate Species for the Exotic Plant Species List of New Mexico

Invasive Plants of Canada: Selected References

Selected Papers on Thistle Control in Australia

National Park Service IPM Webpage on Thistles