. Weeds and weed seeds illustrated and described [microform]. Weeds; Mauvaises herbes; Mauvaises herbes; Weeds. 50 WEEDS AND WEED SEEDS. Poverty Weed (Iva axillaris Pursh.) is a native perennial oeL-urring in urain fields and pastures from Manitoba to the interior of British Columbia, thriving in all soils but Renerally found on land where there is some alkali. The whole plant has a rank odour. Stems herbaeeous, branching, nearly erect from tough, woody extensive root- stocks t) to 12 inches high, very leafy. L»'aves thick, rough-hairy; the lower ones opposit" the upper alternate. Flower
. Weeds and weed seeds illustrated and described [microform]. Weeds; Mauvaises herbes; Mauvaises herbes; Weeds. 50 WEEDS AND WEED SEEDS. Poverty Weed (Iva axillaris Pursh.) is a native perennial oeL-urring in urain fields and pastures from Manitoba to the interior of British Columbia, thriving in all soils but Renerally found on land where there is some alkali. The whole plant has a rank odour. Stems herbaeeous, branching, nearly erect from tough, woody extensive root- stocks t) to 12 inches high, very leafy. L»'aves thick, rough-hairy; the lower ones opposit" the upper alternate. Flower heads drooping, soli- tary, on short footstalks, from the a.\ils of the upper leaves, j^ of an inch across, inconspicuous. The seed is J of an inch long; cohnir variable, olive green, yellowish brown surface mealy and dull; pear- shaped, slightly flattened, There are seldom more than one or two seeds in each flow- er head and many heads have none. ._ Enulication.—Povvrty Weed propagates mainlv l)v its underground stems which .send up many flowering leafy shoots, ami is difficult to eradicate when it becomes well established in the rich soils of western Canadi'. Ploughing for sum- mer-fallow should be clean tind deep, followed bv frecpient cultivation with a broad-shared to almost black. tf^ False Ragweed {Iva xnnthifoUn Xutt). .V coarse annual growing from 1 to G feet in height. It resembles a Ciant but has the leaves less divided while the seeds are small and pear-shaped, slightlv flattened and black clustered together m small heads. The wee<l is most "friHiucntlv met with around barnvards. Cockleburs or Clotburs annuals, differing mostly in tlu 'Rv. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Clark, George H. (George Harold), b. 1872; Canada. Dept. of Agriculture. Seed
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1914
