347] FLORA OF COLUMBIA AND VICINITY 305 



814. P. nyctaginea Dunal. 

 Weedy woods. 



Rhode Island to Iowa and Missouri; Georgia to Louis- 

 iana. 



348. SOLANUM L. [LYCOPERSICON (LYCO- 

 PERSICUM) Mill.]. Nightshade. 



815. S. tuberosum L. Potato. 

 Occasionally adventitious in waste places. 

 South America, thence universal in cultivation. 



816. S. Dulcamara L. Bittersweet. 

 Scarce in waste places and low grounds. 

 Europe and Asia, thence to North America. 



817. S. nigrum L. Black nightshade. 



Common in waste places, wild fields and moist thickets. 

 Cosmopolitan. 



S18. S. Carolinense L. Horse-nettle. 



Abundant in waste places. 



Massachusetts and Ontario to Michigan and Nebraska;, 

 Florida to Texas. 



819. S. rostratum Dunal. Bur nightshade. 

 Occasional in waste places. 



Michigan to South Dakota; Mississippi to Mexico: ad- 

 vancing eastward. 



820. S. Lycopersicum L. [Z. Lycopersicon (L.) Karst.]- 

 Tomato. 



Occasionally adventitious in waste places. 

 South America, thence common in cultivation. 



349. DATURA L. Thorn-apple. 



821. D. Stramonium L. Jimson weed. Jamestown weed 

 Common in waste grounds. 



Asia, thence cosmopolitan. 



822. D. Tatula L. Purple thorn-apple. 

 Waste places; infrequent. 



South America, thence cosmopolitan. 



