A SECOND OHIO WEED MANUAL. 375 



FOREIGN SEEDS FOUND IN COMMERCIAL SEED SAMPLES 



The following named species of weed or foreign seeds have 

 been found in commercial samples of seeds examined during- the 

 past few years. All the seed samples were either purchased for 

 use in Ohio or offered for sale in the state. 



FOUND IN RED AND MAMMOTH 

 CLOVER SEEDS. 



Grass Family. 



Barnyard-grass. Echinochloa Crus-galli (L. 



Beauv. 

 Blue-grass, Kentucky. Poa pratensis L. 



Flat-stemmed, Poa comprcssa L. 

 Crab-grass, Syntherisma sanguinalis (L.) Nash. 

 l * ■• " filiform is (L.) Nash. 



" "* " linearis (Krock) Nash. 



Foxtail, Yellow, Chcetochloa glauca (L.) Scribn. 

 • k Green. Chcetochloa viridis (L.) Scribn. 

 " Whorled, Chcetochloa verticillata (L.) 



Scribn. 

 Italian Millet, Chcetochloa Italica (L.) Scribn. 

 Millet, Pam'cum mtliaceum L. 

 Old Witch-grass, Pam'cum capillare L. 

 Quack-grass, Agropyron repens (L.) Beauv. 

 Slender Paspalum, Paspalum setaccum Michx. 

 Timothy, Phlcum protease L. 



Sedge Family. 



Sedges, Carex spp. 



Buckwheat Family. 



Black Bindweed. Polygonum Convolvulus L. 

 Dock, Broad. Rumex obtusifolius L. 



" Curled, " crispus L. 



" Pale, " salicifolius Weinm. 



" Tall, " altissimus Wood. 



Sorrel. Rumex Acetosella L. 

 Knot weed, Polygonum aviculare L. 



" Erect, Polygonum erection L. 



Lady's Thumb, " Persicaria L. 



Penna. Smartweed, " P e n nsy Ivanicum L. 



Tear-thumb, Polygonum sagittatum L. 



Goosefoot Family. 



Lamb's-quarters, Chenopodium album L,. 

 Mexican Tea, " ambrosioides L. 



Spreading Orache, Atriplex patula L. 

 Western Orache. Atriplex truncata (Torr.) A.Gray 



Amaranth Family. 



Slender Pigweed, Amaranth.ua hybridue L. 

 Rough Pigweed. Amaranthus retrofiexus L. 

 Spreading Pigweed. Amaranthus blitoides Wats. 

 Tumbleweed, Amaranthus graecizuns L. 



Pink Family. 



Forked Catchfly, Silene dickotoma L. 

 Night-flowering Latently. Silene noctiflora L. 

 Stitchwort, A/sine longifolia (Muhl.) Britton. 

 Chickweed, " media L. 



Mustard Family. 



Black Mustard. Brassica nigra (L. ' Koch. 

 Charlock. Wild Mustard, Brassica arvensis L.) 



B. S. !• 

 Turnip. Brassica campestris L. 

 Field peppergrass. Lepidium campestre L. 

 Peppergrass. Lepidium Virginicum L. 

 Shepberd's-purse, Bursa Bursa -pastor is. ;L.) Britt 



Rose Family. 



R< se, Rosa humilis Marsh. 



i all Fivetinger, Potent ilia Monspeliensis L. 



FOUND IN ALFALFA SEED. 



Grass Family. 



Barnyard-grass, Echinochloa Crus-galli (L.) 



Beauv. 

 Crab-grass, Syntherisma sanguinalis (L.) Nash. 

 Fescue-grass, Festuca ovina L. 

 Foxtail, Green, Chcetochloa viridis (L.) Scribn. 

 Yellow, " glauca (L.j Scribn. 



" Whorled, " verticillata iL.) Scribn. 



Kentucky Blue-grass, Poa pratensis L. 

 Millet, Panicum miliaceum L. 

 Old Witch-grass. Panicum capillare L. 

 Quack-grass, Agropyron repens (L,. Beauv. 

 Reed Canary-grass". Phalaris arundinacea L. 

 Timothy, Phleum pratense L. 



Sedge Family. 



Sedges, Carex spp. 



Buckwheat Family. 



Black Bindweed. Polygonum Convolvulus L. 

 Dock, Broad, Rumex obtusifolius L. 



Cu*ied, " crispus L. 

 Sorrel. Rumex Acetosella L. 

 Knotweed, Polygonum aviculare L. 

 Water Pepper, Polygonum Hydropiper L. 

 Lady's Thumb, Polygonum Persicaria L. 



Goosefoot Family. 



Cycloloma, Cycloloma atriplicifolium Spreng.) 



Coult. 

 Goosefoot, Chenopodium murale L. 

 Lamb"s-quarters, Chenopodium album L. 

 Russian Thistle, Salsola Tragus L. 

 Western Orache, Atriplex truncata Torr) A. Gray 



Amaranth Family. 



Spreading Pigweed, Amaranthus blitoides Wats. 

 Rough Pigweed, Amaranthus retrofiexus L. 

 Tumbleweed, Amaranthus gracizans L. 



Pink Family. 



Forked Catchfly, Silene dichotoma L. 

 Night-flowering Catchfly, Silene noctiflora L. 

 Cow herb, Vaccaria Vaccaria \h. Britt 



Mustard Family 



Black Mustard, Brassica nigra (L.) Koch. 

 Charlock, Brassica arvensis (L.) B. S. 1*. 

 False Flax, Came Una sativa ,L. Cranz. 

 Hare's-ear Mustard. Conringia orientals* L. 

 Peppergrass, Lepidium Virginicum L. 

 Rape, Brassica Napus L. 

 Turnip, Brassica campestris L. 



Pea Family. 



Alsike Clover. Trifolium hybridum L. 



Black Mi-dick. Virion Trefoil, Medu ago lupulina L. 



Bird's-foot Trefoil. Lotus comiculatus L. 



White Sweet Clovrr, Mclilotus alba L. 



Yellow Sweet Clover, Melilotus officinalis L. 



Coronilla. Coronilla scorpioidn C. 



Red Clover. Trifolium pratens I.. 



White Clover, Trifolium repens. L. 



Spurge Family. 



Prickly Poppy. Argemone alba Lestib. 



Three-seeded Mercury, Acalypha Vtrgimtca L. 



