464 FLOWERS OF FIELD, HILL, AND SWAMP 



53. Bristly Greenbrier 



^. bhna-nox is a very prickly species, the leaves being spiny 

 on their margins and underneath on the veins. Leaves often 

 narrowed in the middle, distended at base, pointed at apex, 

 smooth and shiny. Flowers numerous, in small umbels ; ber- 

 ries bluish black, i-seeded. Upright branches springing from 

 rootstocks, which bear large tubers. 



Massachusetts to Florida and Texas. 



