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Preliminary Results on the Phytophagous Insect Fauna on Onopordum acanthium (Asteraceae) in Bulgaria
The Scotch thistle, Onopordum acanthium (Asteraceae) has the Eurasian origin and
represents an invasive weed in the USA and Australia. It is a serious problem in pastures,
along roadsides, rangeland, etc. The weed is ...