BY JOHN H. SEARS. 103 



Order Liliacese. 



American White Hellebore, Indian Poke, Veratriim viridCf swaraps 

 and low groiinds. Common. 



Onion or Field Garlic, Allium Canadense, Is a vile wecd giving its 

 alliaceous flavor to all plants grown in its vicinity. Common. Eu- 

 ropean. 



Order Pontederiacese. 



Pickerei weed, Pontederia cordata, common in ponds, brooks and 

 streams. 



Order Graminese. 



Cheat or Chess, Bromus secalinus, one of the European grasses com- 

 mon in ryeand oat fields. There are four species, all European. 



Dog-grass, Trüicum repens, in cultivated grounds, fields, etc. Its 

 long, Underground stems cause much trouble to gardeners. 



Joint-grass, Paspalum setaceum, common in light soils, first showing 

 itself in August on tillage grounds. Growing in mats it is difficult 

 to pull out of the soll, as it breaks easily at the joints. 



Panic-grass, Panicum sanguinale, has habits llke the last, and is 

 abundant in all cultivated and waste ground. European. 



Old Witch-grass, Panicum capülare, common in sandy, cultivated 

 fields. 



Barnyard-grass, Panicum Crus-galli, is a native of the south of 

 Europe, and one of the principal forage plants in Italy. With us it 

 is a troublesome weed. 



Foxtail-grass, Setaria. Three species exist here. Very common 

 near dwellings and in cultivated fields. They are usually very weedy 

 grasses, resembling the Millet, which is another species rarely spon- 

 taneous. 



Beard-grass, Andropogon furcatus, and scoparius. These two grasses 

 are abundant in dry, sterile grounds and roadsides. 



Order Equisetacese. 



Horsetail, Equisetum arvense, is common in moist, gravelly soll and 

 on railroad beds where it is a troublesome weed. Equisetum sylvati- 



