THE HAMILTON ASSOCIATION. 5 I 



Pelee. The Professor's surmise is that the seeds had drifted across the 

 lake from Ohio, as sand is not the true habitat of this species. It is 

 quite a common tree in cultivation throughout Ontario. 



25. Geum vernum, T. & G. Open, damp woods, Amherstburgh, 

 Ont. (Macoun) 



26. Agrimonia parviflora, Ait. Woods near Amherstburgh, 

 Ont. (Maclagan and Macoun) This is probably the form referred 

 to as Agrimonia Eupatoria, var. parviflora by Hooker in his 

 " Flora Boreali-Americana." 



27. Rosa setigera, Mx., (Climbing Rose) Borders of thickets 

 and along fences about Amherstburgh, and on Pelee Island (Macoun) 



28. Crataegus Crus-galli, L., (Cockspur Thorn) Abundant on 

 Queenston Heights and westward to Amherstburgh, where also it 

 was recorded by Maclagan (Macoun) About Lake Erie (Douglas) 



29. Saxifraga Pennsylvania, L. Low places near Fort Erie, 

 Ont. (Day) 



30. Heuchera Americana, L. Woods near Amherstburgh, Ont. 

 (Maclagan and Macoun) 



31. Ludwigia alternifolia, L. In swamps, Canada (Torrey a?id 

 Gray, Fl. N. Am. Hooker, Fl. Bor.-Am.) A species of very doubtful 

 occurrence in Canada. 



32. Lythrum alatum, Pursh. Amherstburgh, Ont. (Maclagan) 

 Low wet sandy places at Pt. Edward, Ont. (J. M. Macoun) In 

 ditches along the G. W. Railway, four miles east of Windsor, Ont. 

 (Macoun) 



33. Opuntia Rafinesquii, Englm. In the sand at the southern 

 end of Pt. Pelee (Macoun and Burgess) Said also to grow on Long 

 Pt, Lake Erie. 



34. Thaspium barbinode, Nutt. Foster's Flats, Niagara Falls, 

 and on the Canada Southern Railway, between Colchester and 

 Amherstburgh (Macoun) Chippewa and Detroit River (Maclagan) 

 Pt. aux Pins, Lake Erie (Burgess) The referring of this species to 

 London, Ont., on my authority by Prof. Macoun in Part I. of his 

 Catalogue is a mistake, the specimen should have been placed under 

 T. aureum. 



35. Berula angustifolia, Koch. Near Port Colborne, Ont., 

 July, 1882 (Day) 



