THE HAMILTON ASSOCIATION. II7 



BIOLOGICAL REPORT FOR THE SESSION 



1897-1S9S. 



The Biological Section has met once each month during 

 the session, when interesting talks have been given on our local 

 flora, the only subject taken up being Botany. 



More interest has been shown by young people than here- 

 tofore and we hope this will increase the attendance at our next 

 session. 



The following list of plants includes a few omitted from 

 catalogue of last year. 



Since publishing the 1S97 proceedings several species 

 credited to Creigie, Logie and Bvichan have been rediscovered. 



Cardamine rotundifolia — Michx. and Munroa squarrosa — 

 Torr. must be omitted, the latter having been accidentally in- 

 serted in place of Cynosurus cristatus — L. Sysimbrium cane- 

 scens — Nutt. Aster tenuifolius — L. and Erigeron hyssopifolius 

 — Michx. should have been credited to Buchan, not having 

 been reported by any other collector. Viola sagittata gives 

 place to Viola ovata — Nutt. from which it has been separated, 

 and notice of different forms of Asarum are withheld until more 

 light is shed upon this genus. 



Ranunculus septentrionalis — Torr. 



Arabis perfoliata — Lam. 



Arabis confinis — Watson. 



Sysimbrium Sophia — L. 



Thlaspi perfoliatum — L. (New to America.) 



Viola ovata — Nutt. 



" blanda Var. palustriformies — Gray. 

 Dianthus Armeria — L. 

 Lychnis vespertina — Sibth. 



Cerastium arvense var. villosum — Holl. & Britt. (New 

 Geranium Bicknellii — Britton. [to Canada.) 



Oxalis acetosella — L. 



