IOWA ACADEMY OF SCIENCES. 
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B. sinapistrum Boiss. Introduced. Common. 
Capsella bursa-pastor is Moenoh. Shepherd’s Purse. Very 
common in waste places. 
Lepidium virginicum L. Wild Pepper-grass. Quite com- 
mon alpng roadsides. 
Raphanussativus L. Common Radish. Escaped from 
cultivation. 
V lOLACEiE. Violet Family. 
Viola pedal a L. Bird-foot Violet. Not common. Prai- 
ries. 
V. pedatifida G. Don. Same as above. 
F. pal mala L. Common Blue Violet. Very common 
everywhere. 
V. pal mala var. cucullata Gray. Very common. 
V. sagittata Ait. Arrow-leaved Violet. Rare; woods. 
V. pubescens Ait. Downy Yellow Violet. Quite common 
in rich woods. 
Caryophyllace^e. Pink Family. 
Saponaria officinalis L. Soapwort. Bouncing Bet. In- 
frequent in waste places. 
Silene stellata Ait. Starry Campion. Frequent ; woods. 
Lychnis githago Lam. Corn Cockle. Wheat fields; rare. 
PortulacacevE. Purslane Family. 
Portulaca oleracea L. Common Purslane. Very com- 
mon in fields after cultivation. 
Claytonia virginica L. Spring Beauty. Quite common 
in damp, rich woods. 
Malvaceae. Mallow Family. 
Malva rotundifolia L. Common Mallow. Waste places; 
frequent. 
Abutilon avicennce Gsertn. Velvet Leaf. A troublesome 
weed in waste places and fields. 
Hibiscus trionum L. Bladder Ketmia. Frequent in 
waste places. 
TiliacetE. Linden Family. 
Tilia americana L. Basswood. Linden. Very common 
in bottoms and on hill slopes. 
