. Farm weeds of Canada . 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 erect stems 6 to 18 inches high, bear flat-topped clusters of white f
. Farm weeds of Canada . 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 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. OX-EYE DAISY ( Chrysant-hemutT) > PLATE 26. OX-EYE DAISY, Chrysanthemum Leucanihemum, L. Other English names: White Daisy, White 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 su
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1906
