456 



Ranunculaceae 



Isopyrum 



50 



Map 937 



Coptis groenlandica (Oeder) Fern. 



have a narrow one. The margins vary from almost entire to acutely 

 dentate. Nieuwland (Amer. Midland Nat. 3: 325. 1914) describes a form 

 found in Porter County with "the upper leaves under the inflorescence 

 somewhat lobed not unlike those of the red maple, the leaves were lacin- 

 iately toothed." 



Hansen reported Caltha flabellifolia from Kosciusko County. I am refer- 

 ring this report to Caltha palustris. See excluded species no. 230, p. 1047. 



Lab. to Sask., southw. to S. C, Tenn., and Nebr. 



2527. HELLEBORUS [Tourn] L. 



See excluded species no. 231, p. 1047. 



2532. ISOPtRUML. 



1. Isopyrum biternatum (Raf.) T. & G. False Rue Anemone. Map 

 936. Infrequent to common in moist, rich woods throughout the state. 

 Probably absent from a few of the northwestern counties. It prefers the 

 beech and sugar maple type of woods. 



Ont. to Minn., southw. to Fla. and Tex. 



2534. COPTIS Salisb. 



[Fernald. Coptis trifolia and its eastern American representative. 

 Rhodora 31 : 136-142. 1929.] 



1. Coptis groenlandica (Oeder) Fern. (Coptis trifolia of Gray, Man., 

 ed. 7 and Britton and Brown, Illus. Flora, ed. 2.) Goldthread. Map 937. 

 At one time probably infrequent to common in most of the tamarack bogs 

 of the lake area. The tamarack bogs have nearly disappeared and those 

 remaining have been so modified by drainage and grazing that this species 

 has become rare and local. In Allen County its habitat has been destroyed. 

 It was also found on sites where the tamarack bog had just passed into the 



