12 TRANSACTIONS. 



URTICACE^:. 



Ulmus Americana, L April 26. 



" fulva, Michx April 26. 



" racemosa, Thomas April 26. 



Laportea Canadensis, Graudich July 21. 



Urtica gracilis, Ait July 28. 



Cannabis sativa, L do 



Pilea pumila, Gray July 31. 



Boehmeria cylindrica, Willd do 



JUGLANDACE.E. 



Juglans cinerea, L May 22. 



CUPULIFER^E. 



Corylus rostrata, Ait April 20. 



Quercus macrocarpa, Michx May 16. 



" rubra, L do 



Carpinus Americana, Michx do 



Ostrya Virginica, Willd do 



BETULACEiE. 



Alnus incana, Willd April 20. 



Betula papyracea, Ait May 1. 



" excelsa, Ait .May 22. 



SALICACEjE. 



Salix discolor, Muhl April 20. 



Populus tremuloides, Michx April 20. 



" grandidentata, Michx do 



" balsamifera, L , do 



Salix cordata, Muhl May 16. 



" rostrata, Kich June 22. 



" lucida, Muhl do 



CONIFERS. 



Taxus baocata, L, var. Canadensis April 20. 



Thuja occidentalis, L May 16. 



Juniperus communis, L . do 



