138 UNIVERSITY OF MISSOURI STUDIES [280 



393. 0. demersum L. 



Ponds; local. 



North America: Europe and Asia. 



Family 41. ANONACEAE DC. Custard-apple family. 



149. ASIMINA Adans. Papaw. 



394. A. triloba (L.) Dunal. Common papaw. 

 Common in shaded bottoms and ravines. 



New Jersev, New York and Ontario to Michigan and 

 Iowa; Florida to Texas. 



Family 42. RANUNCULACEAE Juss. Crowfoot family. 



150. HYDRASTIS Ellis. Orange root. 



395. H. Canadensis L. Golden seal. 

 Rare in rich oak woods. 



New York to Ontario and Minnesota; Georgia and 

 Tennessee to Missouri. 



151. ISOPYRUM L. False rue-anemone. 



396. I. biternatum (Raf.) T. & G. 



Common in woods and thickets along streams, and in 

 deep ravines. 

 Ontario and Michigan to Minnesota; Florida to Texas. 



152. ACTAEA L. Baneberry. 



397. A. alba (L.) Mill. White baneberry. 

 Woods about Rocheport cave. 



Nova Scotia and Anticosti to British Columbia; Geor- 

 gia to Louisiana and Missouri. 



153. AQUILEGIA L. Columbine. 



398. A. Canadensis L. Wild columbine. 



Common on cliffs and ledges, and on the banks of streams 

 and the sides of ravines. 



