1916] Evans, — Notes on New England Ilepaticae, — -XIII 115 



the l)ase of the lobule would apply equally well to P. plahjphylloidea, 

 although the tendency to bear teeth is rather more pronounced in the 

 latter species. 



The writer can add nothing of importance to the published descrip- 



Figs. 26-40. PoRELLA PLATYPHYLLOIDEA (Schweiu.) Lindb. 

 26-30. Lobes of stem leaves, X 15. 31, 32. Lines of attachment of lobules. 31 showing 

 keel on left hand side, and 32, on right hand side, X 35. 33-35. Bracts and bracteole from a 

 single involucre, X 25. 36-38. Bracts and bracteole from another involucre, X 25. 39, 40. 

 Teeth from mouths of perianths, X 200. Figs 26, 27, 31, 33-35, 39 were drawn from a speci- 

 men collected on Mt. Carmel. Hamdeu, Connecticut, by the writer; Figs. 2S-30, 32, from a 

 specimen of Madolheca Jackii Schiffn., collected at Salem in Baden, Germany, by J. B. Jack 

 and distributed by Gottsche & Babenhorst, Hep. eur. 14O: Figs. 36-38, from another specimen 

 collected at Salem in Baden, Germany, by J. B. Jack; Fig. 40, from a specimen collected at 

 Madison, New Hampshire, by H. H. Bartlett, 1350. 



