120 



Rhodora 



[May 



Explanation of Plate. 



PORELLA PLATYPHYLLA (L.) Lilldb. 



1-6. Lobes of stem-leaves, X 15. 7-9. Bracts and bracteole from a single 

 involucre, X 25. 10-14. Teeth from mouths of perianths, X 200. Figs. 1, 2, 

 7-10 were drawn from a specimen collected near Florence, Italj^ by E. Levier, 

 and determined by Schiffner as the typical form of Madotheca platyphylla; 

 Fig. 3, from a specimen collected at Fiesole, near Florence, Italy, by E. Levier, 

 and determined by SchifTner as M. platyphylla var. siibsquarrosa; Figs. 4-6, 11, 

 from a specimen collected at Bic, Quebec, by the writer 98; Fig. 12, from a 

 specimen collected at New Haven, Connecticut, by D. C. Eaton; Fig. 13, from 

 a specimen collected at Vasa, Minnesota, by N. L. T. Nelson 94-5^; Fig. 14, 

 from a specimen collected at New Milford, Connecticut, by the writer. 



