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. Unrubbed Kentucky bluegrass seed (Poa pratensis) .........-..----. 
. Seeds of Kentucky bluegrass (Poa pratensis) - -- - 
. Different forms of commercial seeds of Kentucky bluegrass (Poa 
. Commercial seeds of Canada bluegrass (Poa compressa)-....-.------ 
Seeds of rough-stalked meadow grass ( Poa trivialis)........-...----- 
. Seeds of wood meadow grass ( Poa nemoralis) - - - - 
. Seeds of fowl meadow grass (Poa triflora)..---- - 
. Seeds of Texas bluegrass (Poa arachnifera) -.---- 
. A cluster of Texas bluegrass seeds matted by the webby fibers. ..--.. 
. Seeds of annual meadow grass (Poa annua)... -.- 
. Seeds of alpine meadow grass (Poa alpina) ----- - 
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. Seeds of nerved manna grass ( Panicularia nervata) ..-..2..--------- 
. Seeds of water meadow grass ( Panicularia americana) .......-------- 
. Seeds of shepherd’s-purse ( Bursa bursa-pastoris) - 
. Seeds of peppergrass (Lepidiwm virginicum) ....- 
. Seeds of mouse-ear chickweed ( Cerastium vulgatum).....-.---------- 
. Seeds of chickweeds (Alsine media and A. graminea)...--..-.------- 
. Seeds of Canada thistle ( Carduus arvensis) ----- - - 
. Prickles often found with bluegrass seed ----.--- 
. Seeds of dandelion (Taraxacum taraxacum)...--. 
. Seeds of scentless camomile ( Matricaria inodora) - 
. Seeds of hawkweed (Mieracitumsp.)--.--.------- 
. Seeds of dog fennel (Anthemis cotula) .......---- 
. Seeds of lamb’s-quarters (Chenopodium album) .- - - 
. Seeds of rib-grass ( Plantago lanceolata) ...-..----- 
. Seeds of curled dock ( Rumex crispus) -.-.------- 
. Seeds of sorrel (Rumezx acetosella)....-..-------- 
Seeds of corn speedwell ( Veronica arvensis) -.--- - 
. Seeds of slender rush (Juncus tenwis)....-.------ 
. Seeds of field rush (Juncoides campestre).-------- 
. Seeds of wood rush (Juncoides albida).-..------- 
. Seeds of sedge ( Carex cephalophora) -...---.------ 
. Ergot ( Claviceps purpurea) of Kentucky bluegrass 
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