File:Farm weeds of Canada (1906) (14753263486).jpg

Identifier: farmweedsofcana00clar (find matches)
Title: Farm weeds of Canada
Year: 1906 (1900s)
Authors: Clark, George Harold, 1872- Fletcher, James, 1852-1908 Criddle, Norman Canada. Dept. of Agriculture
Subjects: Weeds Weeds Botany
Publisher: Ottawa : Published by direction of the Minister of Agriculture
Contributing Library: ASC - York University Libraries
Digitizing Sponsor: Ontario Council of University Libraries and Member Libraries

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ants of fall wheat have been killed out bythe winter. Chess plants growing among the wheat from seeds sown with thegrain, are seldom injured, but flourish to such an extent that some farmershave been led to the erroneous conclusion that Chess has originated fromwheat plantlets which have been injured in various ways. It has, however,been proved conclusively that Chess is an entirely distinct grass which cangrow only from its own kind of seeds; moreover, these seeds (Plate 56, fig. 78—natural size and enlarged 4 times) always have upon them a husk with a rowof bristles down each side of the groove, by which as well as by their shapethey may be easily distinguished from those of wheat. All doubters arerecommended to dig up some plants of Chess as soon as they are recognizablein their fields, when they will find that the seeds from which the Chess plantsbegan to grow the previous autumn, are still attached to the roots and thatthese are very different from grains of wheat. , 86 Plate46
Text Appearing After Image:
-^/M7^^ COUCH,QUACK or SCUTCH GRASS lAg ropy rum re pens./, ) PLATE 46.COUCH OR QUACK GRASS, Agropyjum repem (L.) Beauv- Other English names: Scutch, Twitch, Quitch.Other Latin name : iriticum repens, L. Introduced and native. Perennial by very wide-spreading but shallowfleshy rootstocks, forming large, matted beds. Flowering stems rather free-ly produced, smooth above, downy on the leaf sheaths below. Flowers in3 to T-Howered spikelets, forming a narrow spike with the spikelets lyingflatly against the central stalk. Leaves grayish green, rather distinctlyribbed, and more or less hairy. Seed in the husk (Plate 56, fig. 79—naturalsize and enlarged 4 times) about f of an inch long, slender, 5to T-nerved, usually with an awn ; inch long at the tip; the seed itself isshaped like a small grain of wheat i,, of an inch long with wide open crease,the basal germ end pointed, and at the top a blunt fuzzy tip. Time of Flowering: About the end of June; seeds ripe July. Propagation: By seeds and

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