61 



root stocks of D. laclniata . Is placed here by Dr. Gray, 

 fhis Is the best disposition to be made of the numerous 

 forms of this abundant species, so far as Its local speci- 

 mens are concerned." Loo. Herb.: Pall Cr. and Negundo 

 Woods (both typical); Six Mile Or. (leaflets rery narrow; 

 3 about whorle4» 4th about 6 cm. above); same location 

 ("the 2-leaTed foinn of the Cayuga Flora"); Buttermilk 

 Swamp (leftTes alternate; called intermediate between D. 

 laciniata and P. heterophylla , tho the latter is said by 

 B. M. to have "stem-leaves generally 2, opposite or near- 

 ly 8o"» while G. M. says "caalive leaves 2-3, variously 

 disposed"); also Lockport (typical). 



^e forms collected by the writer that seem near- 

 est to the "2 - leaved form" above will be discust» most- 

 ly at least* in connection with D. maxima , to which those 

 most abundantly found seem most closely related. In ac- 

 cordance with the plan outlined above, the stations for 

 "typical" specimens will be given here. 

 Sta. 1. Six Mile Cr., Beechwoods (very abundant). 



" 2. Tanghannock ravine (rather abundant). 



" 3. Shurger*s Glen (rather abundant). 



" 4. Salmon Cr., flats above Myers (few). 



" 6. Pall Or. ravine, north of Oampus. 



" 6. Hear West Br- of Inlet Or., below and near 



