62 The Bulletin, 



PLATE IV. 



HlioirUifi !<rc(ls natural size and ciilai-iKil. 



a. Tall Buttercup ( L'<nnnirii] as acris T..) I).ii'k lirown. lint. In coarse 



LTMSSCS. 



b. Creeping Buttercup (Ratiiniriilus rcitciis L.) Reddish lir<i\vii. lint. In 



clovers and mai'se .grasses. 



c. Hairy Buttercup ( lianiniculiix parnilKs L.) Dark brown. Hat. surface 



slii^dilly tntiei'cleil. In European crimson clover and grasses. 



d. Opium or Garden Poppy (I'aijavcr soiiiiiifcnnii L.) Gray, slightly llat- 



tciicd. In imported clovers, grasses, and millets. 



e. 1. Poppy (Piiiiarrr sp.) Gray: 2. Field Toppy (P. lihocaR L.) P.rown : 



:;. l.ontr Smooth-fruited Poppy (P. diihinui L.) Brown. Found In Euro- 

 pean crin!son clover. 



f. Field Cress (Lviuduiin campcstre (L.) R. Br.) Dark reddish brown. In 



clovers, grasses, and cereals. 



g. Wild Pepper-grass (Lriiidiiiiu Yirniinriiiii L.) Reddish ytdlow. flat. In 



fa I'm sec<ls ,i,'en<'rally. 

 h. Field Penny-cress (Tlihtsjii arrensc L.) Dark brown. In clovers, grasses, 



and cer(\-ils. 

 1. Hedge Mustard ( sisuniliriinii officinale (L.) Scop-) Yellowish or green- 

 ish tinged. In domestic alfalfa, clovers, grasses, and cereals. 

 j. Tall Sisymbrium ( ^i.sjjnihriimi alti.ssinnnii L.) Eight yellowish red 



tinned. In alfalfa, clovers, grasses, and cereals. 

 k. Black Mustard fBrasf^ica nif/ra (L.) Koch.) Brown, pitted, taste pun- 



i,'('nt. In clovers, grasses, and cereals. 

 I. Indian Mustard (Bra^sica jinicca (L.) Co.sso)i.) Reddish brown, slightly 



])ungent. jiittcd or netted surface. In grasses, millets. ;ind cereals, 

 tm. Charlock or Wild Mustard (Brassica arveusix (L.) B. S. P.) Black or 



In-own. slightly ]>nngent. nearly smooth, spherical. In clovers, grasses, 



millets, and cereals. 

 *n. Rape (Brassica Xapus L.) Black, surface granular, slightly pitted, not 



pnuLrent. In farm seeds generally. 

 0. Wild Radish (Rapliaiiii.s RapJiaiiistrum L.) Pod sectious brown or str.-iw- 



colorcd. each having one reddish seed. In cereals and vetches, 

 p. Early Winter Cress (Barharva pracco.r (J. E. Siiiifli) R. Br.) Gray, 



tri'annlar. In domestic crimson clover and cereals, 

 q. Shepherd's Purse (Bursa Biirsa-pasforis (L.) Brittoii.) Reddish yellow. 



In farm seeds i:enerally. 

 r. False Flax (Caiiicliiia safira (L.) Craiitz.) Eight or reddish yellow. In 



flax and cereals. 

 s. Small-fruited False Flax (Caiiicliiia iiiicrocarjia A/nlrz.) Reddish brown. 



In alsikc clover, timothy, and cereals, 

 t. Ball Mustard (ycxlia paniciiJata (L.) Dcsr.) Brown or straw-colored 



jiods. siirface coarsely pitted. In crimson clover, flax, and cereals, 

 u. Hare's-ear (('oiirinpia' oririilalis (L.) Dumort.) Dark brown, granular. 



In ilovers. flax, nnllets. and cereals. 

 V. Rough Cinquefoil I Potciitilln Mo)i.^pcJir)i.<<i.'< L.) Eight brown, oval, lens- 

 shaped. Coninionest in alsike clover, timothy, and cei'cals. 

 w. Salad Burnet ( Smiiiiiisorha ^iniKjHisorha (P.) Britloii.) Eight brown. 



siiindlc shaped. In Enroiiean ci'imson clovi'r and coarse grasses. 

 X. Low or Pasture Rose C/.'o.vr/ Inunilis Marsh.) Brown, smooth, shape va- 

 riable. Chiefly in cereals. 



*.\(iricull lira! s( ( il. 

 ■^I'lihiii-fiiJ scffl. 



