THE BATTLE OF LIFE, 93 
. They occur in very varying proportions on the different 
plots according to the season and according to the nature 
of the manure employed. They vary somewhat in ro- 
bustness of constitution and ability to withstand frost or 
drouth ; and their structural characters are, generally 
speaking, characteristically different from those of other 
plants, and variable as between species and species. Some 
maintain their ground or even increase when growing in 
competition or association with their fellows ; others— 
such as Anthozanthum odoratum, Festuca ovina, and 
Agrostis vulgaris—can only hold their own or assert 
themselves when the competition exercised by their asso- 
ciates is relatively weak, and succumb under the opposite 
circumstances. 
Yellow oat-grass. 
Meadow grass. [Blue grass.} 
Rough stalked meadow grass. 
Briza media Quake-grass. 
Dactylis glomerata Cock’s-foot grass. [Orchard G.] 
Avena flavescens = 
Cynosurus cristatus = Crested dog’s-tail grass. 
Poa pratensis 
“ trivialis 
Festuca ovina Sheeps’ fescue. 
“pratensis Meadow fescue. 
«  elatior Tall fescue. 
Bromus mollis Soft brome grass. 
Lolium perenne Rye grass. 
LEGuMINOs4. 
Trifolium repens = White clover. 
" pratense = Meadow clover. [Red clover.] 
Lotus corniculatus = kBbird’s-foot trefoil. 
Lathyrus pratensis = Meadow vetchling. 
‘WEEDS. 
Ranunculus-variousspecies— § Buttercups. 
Cerastium triviale Mouse-ear chickweed. 
Conopodium denudatum — Earth nut. 
Centaurea nigra =  Knap-weed. 
Carduus arvensis = Common thistle. [Canada T.] 
Bellis perennis = Daisy. 
Achillea Millefolium = Milfoil. [Yarrow.] 
Taraxacum officinale = Dandelion. 
Plantago lanceolata = Plantain or Rib grass. 
Rumex Acetosa ==  Sorrel-dock. 
