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Home / Science / Biology / Flora and Fauna / Plantae / Magnoliophyta / Magnoliopsida / Asteraceae / Centaurea
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Web Sites
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- CalFlora: Centaurea calcitrapa - Common names: red or purple starthistle. Photographs and description, distribution map for California, classification as invasive species and noxious weed.
elib.cs.berkeley.edu/cgi/calflora_query?special=xwalk&where-calrecnum=1845&one=T
- Centaurea calcitrapa - Red Star-Thistle. Detailed plant classification, national distribution maps, status as invasive plant and noxious weed. From the USDA PLANTS data base.
plants.usda.gov/cgi_bin/plant_profile.cgi?symbol=CECA2
- Centaurea tauromenitana - Image of plant, close-up of flower head.
www.dipbot.unict.it/orto/0440-1.html
- Knapweed - Photographs, descriptions and distribution information for spotted knapweed (Centaurea maculosa), brown knapweed (Centaurea jacea) and Russian knapweed (Centaurea repens). From the Ontario Ministry of Agriculture and Food.
www.ovma.on.ca/Weeds/knapweed.htm
- Purple Starthistle Identification - Identifying photographs for Centaurea calcitrapa. From King County, Washington, Department of Natural Resources.
dnr.metrokc.gov/wlr/lands/Weeds/star.htm
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