PUCCINIA XANTHII F.SP.AMBROSIAE-TRIFIDAE,A NEWLY RECORDED RUST TAXON ON AMBROSIA IN CHINA
在豚草上发现的一个锈菌中国新记录种

The ragweeds, especially Ambrosia trifida L., have become widespread and difficult to control in the Shenyang area. A recent investigation of natural enemies of the harmful weeds resulted in the finding of Puccinia xanthii Schwein. f. sp. ambrosiae-trifid…