68 ' MICHIGAN ACADEMY OF SCIENCE. 



361. CICERBITA. Wallr. Alulgeditim Cass. 



850. Floridana (Lin.) Wallr. Borders of moist woods on Belle Isle. Eare. 



857. Canadensis (Lin.) Sonchus Canadensis Lin. Sp. PI. 79.3: 1753 (ex- 



clude disoription) . On Belle Isle and other places. Common. 



858. var. integrifolia (T. & G.) Mulgcditim leucophceuni, vai\. in- 

 tegrifoUnni T. & G. Flora ii, 499: 1843. Belle Isle and near Palmer 

 Park. Rare. 



302. SOXCHUS, Lin. 



. 859. arvensis, Lin. Sow Thistle. Ballast grounds, etc. Frequent. 

 800. oleraceus. Lin. Belle Isle. etc. Common in waste places. 

 / 801. asper (Lin.) Hill. Belle Isle, etc. Common in waste places. 



303. LACTUCA, Lin. Lettuce. 



862. sativa, Lin. Garden Lettuce. Occasionally a specimen of this species 

 is found on the Island, also on the main land in Avaste places. 



803. Scariola, Lin. Common in waste places, also Belle Isle. 



804. Canadensis, Liu. Belle Isle and elsewhere. Common. 

 865. hirsuta, Mvihl. Xear Linden Park. Frequent. 



806. sagittifolia. Ell. Belle Isle. Common along the shores. 



807. pulchella (Ph.) DC. Waste places. Eare. 



364. PRENANTHES. Lin. Eattlesnake-root. 



808. altissima, Lin. Xear Palmer Park. Frequent. 



869. alba, Lin. Common on Belle Isle. 



365. HIEEACIUM, Lin. 



870. scabrum, Mx. Hawkweed. Linden Park. Frequent. 



