. Bulletin. 1901-13. Agriculture; Agriculture. b <<* a Fig. 31.—Seeds of slender rush i Juncus tenuis): a, seeds en- larged: b, natural size of seeds. Seeds very minute, about J mm. long, broadly spindle- shaped, the extremities usually slightly curved; surface (as seen under a lens) nearly smooth; color reddish yellow, darker at the extremities, which sometimes bear a small white tissue. (Fig. 31.) Often quite abundant in poorly cleaned Kentucky bluegrass seed, sometimes cling- ing in bunches of several seeds each. Juncoides campestre (L.) FIELD Kl'SH. Fig. 32.—Seeds of field r
. Bulletin. 1901-13. Agriculture; Agriculture. b <<* a Fig. 31.—Seeds of slender rush i Juncus tenuis): a, seeds en- larged: b, natural size of seeds. Seeds very minute, about J mm. long, broadly spindle- shaped, the extremities usually slightly curved; surface (as seen under a lens) nearly smooth; color reddish yellow, darker at the extremities, which sometimes bear a small white tissue. (Fig. 31.) Often quite abundant in poorly cleaned Kentucky bluegrass seed, sometimes cling- ing in bunches of several seeds each. Juncoides campestre (L.) FIELD Kl'SH. Fig. 32.—Seeds of field rash (Jun- coides campestre): a, different views: b. natural size of seeds. Seeds lj-li mm. long, oval, not flattened, the ex- tremities unequally pointed, the basal extremity turned slightly to one side and consisting of soft white or yellowish tissue; a narrow and often indistinctly de- fined whitish ridge extends from the base to the apex; body of the seed wine-colored and semitranslucent or grayish. (Fig. 32.) Found frequently in the seed of wood meadow grass and of the Poa sudelica of European origin. Juncoides albida DC WOOD RUSH. Seeds 1-1J mm. long, narrowly oval, not flattened; base without an appendage of soft tissue; apex more acutely pointed than the base; a distinct brown or reddish brown ridge joins the base and apex; body of the seed reddish brown or wine- colored, often semitranslucent. (Fig. 33.) Found in various species of European-grown blue- grass seed. The usually smaller size, absence of the basal appendage, and more distinct and constant red- dish-brown lateral ridge serve to distinguish these from the seeds of Juncoides 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 United States. Bureau of Plant Industry, Soils, and Agricultural Engineering. Washington Govt. Print. Of
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