Explanation of Plate III. 



Pulsatilla hirsutissima p. 115. 



Head of fruit of Pulsatilla hirsutissima p. 115. 



3. Head of fruit of Astragene americana p. 119. 



4. Achenes of Thalictrum dioicum p. 134. 



5. Head of fruit of Clematis virginiana p. 117. 



6. Head of fruit of Clematis simsii p. 118. 



Anemone caroliniana • • ■ .p. 106. 



Achenes of Thalictrum purpurascens p. 135. 



