Weeds of the Farm and GardenOrange Judd Company, 1912 - 281 páginas |
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Página 12
... branched roots , making it rather difficult to ex- terminate . The following tables give the depth of roots and area covered by some of the common weeds . These figures indicate that the weeds may effectively rob the soil of 12 WEEDS OF ...
... branched roots , making it rather difficult to ex- terminate . The following tables give the depth of roots and area covered by some of the common weeds . These figures indicate that the weeds may effectively rob the soil of 12 WEEDS OF ...
Página 52
... branched stalk and produces numerous purple flowers . The allied bull thistle ( C. lanceolatum ) is especially troublesome in pastures in the timber lot , fre- quently growing in such large masses as to become de- cidedly noxious ...
... branched stalk and produces numerous purple flowers . The allied bull thistle ( C. lanceolatum ) is especially troublesome in pastures in the timber lot , fre- quently growing in such large masses as to become de- cidedly noxious ...
Página 125
... branched escence . Spike of again . Of the deter- cat - tail . ( Dud- geon . ) minate inflorescence the most important is the cyme . The cyme is a flat topped or convex flower clus- ter somewhat like the corymb , but with the terminal ...
... branched escence . Spike of again . Of the deter- cat - tail . ( Dud- geon . ) minate inflorescence the most important is the cyme . The cyme is a flat topped or convex flower clus- ter somewhat like the corymb , but with the terminal ...
Página 138
... brown in color , sheaths eight to twelve - toothed ; the sterile plants slender branched , with four - angled stem and four - toothed sheaths . Common in moist , sandy soil and fields 138 WEEDS OF THE FARM AND GARDEN.
... brown in color , sheaths eight to twelve - toothed ; the sterile plants slender branched , with four - angled stem and four - toothed sheaths . Common in moist , sandy soil and fields 138 WEEDS OF THE FARM AND GARDEN.
Página 141
... branched annual , one to three feet high , spreading on the ground , with erect , smooth , spreading stems ... branching stems , one to three feet high , with very hairy leaf sheath and wide - spreading panicles , which are terminal on ...
... branched annual , one to three feet high , spreading on the ground , with erect , smooth , spreading stems ... branching stems , one to three feet high , with very hairy leaf sheath and wide - spreading panicles , which are terminal on ...
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Términos y frases comunes
achenes alfalfa annual awned biennial blue grass bracts branched brome grass bull thistle C. M. King calyx Canada thistle carpels cent Cirsium clover seed clusters cocklebur common weed corn corolla crab grass crop cultivated curled dock dodder erect Europe five five-lobed four foxtail fruit germination glabrous glumes hairy herb horse nettle impurities inches long involucre Iowa lanceolate leaf leaves linear lobes marsh elder meadows milkweed Minnesota Missouri morning glory mustard native North numerous oats oblong ovary ovate ovules panicles pappus pastures pepper grass perennial petals petioled pigweed pinnately pistil Plantago plantain plants plowing poisonous Polygonum prickly pubescent purple quack grass racemes ragweed roadsides roots rootstocks Rumex sepals sessile sheaths sheep sorrel slender smartweed smooth soil species spikelets spikes spreading Spurge squirrel-tail stamens stem stipules sulphate Sunflower sweet clover Texas three feet high toothed troublesome weed U. S. Dept upper waste places weed seeds wild yellow