The Weeds of Ontario

ISBN: 9781332210961 出版年：2016 页码：83 F C Harrison Forgotten Books

Some weeds are rolled along the ground by the wind. To this class belong the Russian Thistle and the Tumbling weed of the north-west. When these weeds ripen, they break off close to the ground and being light, they are easily carried by the wind, especially on an open prairie, and the seeds drop out as the weed rolls from place to place.