THE EEIAN OR DEVONIAN FORESTS. 



63 



fronds, apparently bearing on parts of the main stem or 

 petiole small rounded sporocarps. They are found abun- 

 dantly in the Middle Erian of the State of New York, 

 and also occur in Scotland, while one species appears to 

 occur in Nova Scotia, as high as the Lower Carboniferous 

 (Figs. 17, 18). 



These organisms have been variously referred to Lyco- 

 pods, to Algaa, or to Zoophytes, but an extended compari- 



Fio. 18.— PlUophyfon Thomtoni (Sootland). a, Impregsion of plimt in 

 vernation. 6, Branches coDJecturally restored, c. Branches of l^co- 

 poddtes MUlerij on same slab. 



son of American and Scottish specimens has led me to 

 the belief that they were aquatic plants, more likely to 

 hare been allied to Ehizocarps than to any other group. 

 Some eyidence of this will be given in a note appended 

 to this chapter. 



