. Weeds and weed seeds illustrated and described [microform]. Weeds; Mauvaises herbes; Mauvaises herbes; Weeds. 52 WEEDS AND WEED SEEDS. American Dragonhead {Dracocephalum paniflorum Nutt.) is a native annual or biennial quite widely distributed in the Prairie Provinces. The seeds are much like those of Hedge Nettle, but longer (J inch) and M narrower, being twice as long as wide, more angular and some- what winged and wrinkled along the angles near the apex. The basal scar is large and curved, with a slit in the middle, giving it the appearance of a mouth; colour dark brown; the outer <'on
. Weeds and weed seeds illustrated and described [microform]. Weeds; Mauvaises herbes; Mauvaises herbes; Weeds. 52 WEEDS AND WEED SEEDS. American Dragonhead {Dracocephalum paniflorum Nutt.) is a native annual or biennial quite widely distributed in the Prairie Provinces. The seeds are much like those of Hedge Nettle, but longer (J inch) and M narrower, being twice as long as wide, more angular and some- what winged and wrinkled along the angles near the apex. The basal scar is large and curved, with a slit in the middle, giving it the appearance of a mouth; colour dark brown; the outer <'onvex face distinctly ridged lengthwise and granular roughened. The seeds are fre<iuently found in western grain, lieing very common in wheat screenings; thev occur occasion- ally in grass anmaller, .'tbnut 1 of an inch long. It is bro.'iilly egg-shapeij in outline, one surf.'ice rounded, the other bluntly keeled from the round, ^^ Hat, depressed sc;ir up to the ^B^ ""<lill. The wlicile Med is gr^'v i-li-browii. wrinkled from unevenly scattered, wliiti-h tubercle^. '!'lie veeds are ipiite ronunon in grown in tiie M;irilime Provinces and .•ue oe<; found in alfalfa ami red seed. EriitUciili«ii. l,y thorough cultivation;'kee]) eloseU cut or llMUd pull in Wa^le pi.' 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 Branch. Ottawa : Dept. of Agriculture
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1914
