58 The Bulletin. 



PLATE IT. 



Slioiriiif) .sTC'/.s- iiatiifuJ s'izr and nihirf/cd. 



a. Tufted Hair-grass i Drscluniiiixia cacsitUoNii (L.) Bcdiir.) Hull single, 



wliiti' 111' straw-cdioi'i'd, hairs aud a Iiristh' at the Iiasc. In grasses. 



b. Wavy Hair-grass i DiscIkiiii /ixia ftcmosd (Lj Tr'ii\.) Similar to a. Imt 



Nmircr and brown. In grasses. 

 *c. Common Oat (Arena satira L.) llnll single, mostly smooth, sometimes 



awiu'd. 

 td. Wild Oat (Arena fufaa L.) Hull single, straw-colored or bi'own. hairy 



(II- only so at the base, a twisted awn from middle, sear ringlike. In 



cereals. 

 *e. Tall Oat-grass ( Arrliciiatlicruiii rJatiiis (L.) liraiir.) Hull single, nearly 



cylindrical, awned at base, stra.w-colored. In coarse grasses. 

 ='^f. Bermuda-grass (CaprioUi Dacti/lon (L.) Kuutzc.) Hull single, flattened, 



smooth, straw-colored. In clovers and grasses, 

 g. Molinia (MaVniia cocriilca (L.) MociicJi.) Hull single, brown, diill. In 



Knro])ean clovers and grasses. 

 ^•=h. Orchard Grass iDacfjilis glonierata L.) IIuH single, straw-colored, curved 



and ]Hiinf<'d. In clovers and grasses. 

 *i. Dog's-tail Grass (Ciinoxiirii.'i crlstatus L.) Hull single, brown, the jiointed 



ajiex yellnw and rnugh. In European clovei's and grasses. 

 *j. Kentucky Blue-grass ( I'oa jnatrnsis J,.) Hull single, light brown, usually 



acute at ends, side veins distinct. In clovers and grasses. 

 *k. Canada Blue-grass (Pna cnnipressa L.) Hull single, lighter colored than 



.1. iu(ire blunt at ends, side veins indistinct. In clovers and grasses, 



especially alsike clover and Kentucky blue-grass. 

 I. Rat's-tail Fescue-grass (Fc.stticu Mijuros L.) Hull single, straw-colored, 



rough, slender-awned. In clovers and grasses generally. 

 *m. Meadow Fescue-grass (Frsfiica elatioi- L.) Hull single, straw-colored. 



Stem cylindrical. «'X]ianded at apex, 

 n. Soft Chess (Broiniis honlcaceiis L.) Hull single, tlattened. light straw- 



cdinred. wrinkled, awned. In coarse grasses, 

 to. Cheat (liroiinis secalhiHs L.) Hull single, nearly cylindrical, straw-col- 



(ired. smooth, usually awned. In coarse grasses and cereals. 

 *p. English Rye-grass (Loliani iicrennc L.) Seeds similar to m. differ ])ar- 



ticularly in the tlattened, wedge-shai)ed stem. 

 *q. Italian Rye-grass (LoViKni ItaJiciini A. Br.) Seeds differ from ]> chieliy 



in the slender awn from the apex. In grasses, 

 r. Darnel (fjtliiii)i Inniilnii inn L.) Seeds structurally similar to i]. but 



larg<'r and more robust. In cereals, 

 ts. Couch-grass (Ayropyron repens (L.) Beaiir.) St^d clusters and single 



seeds similar to m and p. Found in cereals and awuless brome grass, 

 t. Sedges < Carer -^pji.) Seeds brown, both free and cov(>red by flattened. 



Ilask-shaped hull. Found mostly in grasses. 

 fu. Wild Onion (AlJiinn riiicalc L.) Bulblefs covering papery, white, straw- 

 colored, oi- jiurple. In cereals, particularly wheat. 

 *v. Hemp (Cainiahls xalira L.) Seeds gray, smooth, veined. In millets and 



cereals. 

 w. Field Sorrel (Runic.r Accto-srlla I..) Seeds smooth, amber colored, shin- 

 ing, often covered by reddish hull. In farm seeds generally. 

 X. Curled Dock (Ranicr crif^piis L.) Seeds beechnut-shaped, reddish bi-own, 



shining. In farm seeds generally. 



*Af/riciiUiiral seed, 

 f Villa irful seed. 



