. Farm weeds of Canada . n present, con-sisting of several rows of short bristles barbed upwards. 7*17716 of Flowering : Jiily to August; seed ripe September. Propagation : By seed. Occurrence : Rich land in the older settled provinces; common in wasteplaces, by roadsides and in orchards in sod. There are two forms of the Burdock found wild in Canada as weeds;by far the commoner is the one figured in our plate, which has much morenumerous and smaller flower heads, with the scales of the involucre shorter;the seeds are darker, sometimes showing hardly any pale brown marks; thepetioles are hollo
. Farm weeds of Canada . n present, con-sisting of several rows of short bristles barbed upwards. 7*17716 of Flowering : Jiily to August; seed ripe September. Propagation : By seed. Occurrence : Rich land in the older settled provinces; common in wasteplaces, by roadsides and in orchards in sod. There are two forms of the Burdock found wild in Canada as weeds;by far the commoner is the one figured in our plate, which has much morenumerous and smaller flower heads, with the scales of the involucre shorter;the seeds are darker, sometimes showing hardly any pale brown marks; thepetioles are hollow, which is not the case in the other and less onramon form,Arctium Lappa, L., (Lappa major, Gaertn., and L. officinalis, All., , Gray). This latter has much larger green flower heads, IJ inchesacross, with the hooked scales more spreading and has longer peduncles. Remedy: Cut below the crown or spud out when the ground is wet andsoft, either the first year, or before the seeds are ripe in the second. 56 Plate n. LESSER BURDOCK (Arcrium Lappa /...,/ Plate 28
Size: 1336px × 1870px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1906
