File:Farm weeds of Canada (1906) (14589745007).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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nsversely wrinkled. The apex of the seed is excavated and bears the 53 gear of the flower at its center. The two depressions on the concave side givethe seed a curions mask-like appearance. These depressions on the whiteunripe seed are seen as two green swollen translucent glands. Taeeow or MtLFOiL, Achillea Millefoliuvi, L., is a well known plant bywaysides and in meadows everywhere from Atlantic to Pacific. In the Westis a native form which occurs high up on mountains as well as on the prairies.The erect stems 6 to 18 inches high, bear flat-topped clusters of white flower-heads and finely divided fern-like leaves. The seeds (Plate 56, fig. 61—natural size and enlarged 4 times) are very small, flat and thin, gray with awhite margin, about ^ of an inch long and oblong-wedge-shaped;the basal scar is circular and distinct; the apical scar is a small cushion-like prominence from the middle of the broadly notched apex. These seedsare very often found among small grass seeds. 54 Plate 26
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OX-EYE DAISY ( Chrysant-hemutT) Leucanfhemum./. > PLATE 26. OX-EYE DAISY, Chrysanthemum Leucanihemum, L. Other English names: White Daisy, White Weed.Other Latin name: Leucanthemum vulgare, Lam. (Xoxious: Dom., Ont.). Introduced. Perennial, shallow-rooted. Steme numerous, simple or littlebranched, 1 to 3 feet high. Basal leaves spatulate or oblong, crenate orcoarsely toothed, narrowed into slender petioles; stem leaves sessile, partlyclasping, deeply divided at the base and coarsely toothed above. Flower-heads solitary on long, naked peduncles, very handsome, 1§ to 2 inches across;rays 20 to 30 pure white, spreading, 2 to 3-toothed at the apes; disk tlowersyellow. Seeds club-shaped or elongate-ovate, -^ of an inch in length,usually curved, almost straight on one side, and convex on the other, theknob-like scar at the top prominent; there are 10 well defined white ridgeswhich run the whole length of the seed, meeting at both ends; between theseridges the surface of the seed is blac

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