. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. 2, Centaurea Jacea L. Brown or RayedKnapweed. Fig. 4657. Centaurea Jacea L. Sp. PI. 914. 1753. Perennial, 2° high or less. Leaves entire ordenticulate, rarely lobed; heads I-ii broad; in-volucre globular to ovoid, its bracts closely im-bricated, brown or with brown backs, the outerones pale brown with fimbriate appendages, themiddle ones lacerate, the inner entire or nearlyso
. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. 2, Centaurea Jacea L. Brown or RayedKnapweed. Fig. 4657. Centaurea Jacea L. Sp. PI. 914. 1753. Perennial, 2° high or less. Leaves entire ordenticulate, rarely lobed; heads I-ii broad; in-volucre globular to ovoid, its bracts closely im-bricated, brown or with brown backs, the outerones pale brown with fimbriate appendages, themiddle ones lacerate, the inner entire or nearlyso, dark brown; marginal flowers neutral withenlarged radiant corolla-limbs; achenes obscurely4-sided; pappus none, or a minute crown. In waste places, northern New York, Vermont andMassachusetts, and in ballast about eastern in British Columbia. Fugitive from 3. Centaurea nigra L. Black Knapweed. Hardheads. Centaury. Fig. 4658. ..« Cen aurea nigra L. Sp. PI. 911. 1753. Perennial, scabrous or pubescent; stem stiflF,branched, i°-2° high. Lower and basal leavesspatulate or oblong, acutish, entire, denticulate,dentate or lobed, not pinnatifid, 3-6 long, nar-rowed into l
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
