35 

 7 tridentata Ait. Hoosak Mountain. 



308 Pothos Mx. Dracontium L. Ictodes Big. Sym- 



plocarpus Salisbury. 



1 foetida Mx. Skunks Cabbage. 



309 Pragmites Trinnius. 



1 communis Trinn. Marsh Reed Grass. Amherst, S. Parish. 

 Arundo Pragmites W- 



310 Prenanthes L. 



1 alba L. White Lettuce. 



2 altissima L. 



3 cordata W. 



4 virgata Mx. Pittsfield, Eaton. 

 31 1 Prinos L. 



1 verticillatus L. Winter Berry, False Alder. 



31 2 Proserpinaca L. 



1 palustris L. Mermaid Weed. 



313 Prunella L. 



1 pennsylvanica W. Heal All. 



314 Primus L. 



1 borealis Ph. 



2 americana Marshall — Ann. Lye. N. Y. vol. 3. Plum Tree, 

 chicasa Mx? 



3 depressa Ph. 



4 mollis Torrey. Williamstown. 



5 pumila L. 



6 serotina Ehrh. Choke Cherry. 



7 virginiana L. Wild Cherry, Cabinet Cherry. 



315 Pycnanthemum Mx. 



1 aristatum Mx. 



2 incanum Mx. Mountain Mint. 



3 lanceolatum ? Ph. 



4 linifolium Ph. Virginian Thyme. 



316 Pyrola L. 



1 asarifolia Mx. 



2 elliptica Nutt. 



3 minor L. ? 



4 rotundifolia L. Shin Leaf Winlergreen. 



