Hepaticae : Yale Peruvian Expedition of ic>ii. 



321 



bear from four to eight pairs of bracts, and the postical keel of the 

 perianth is smooth. 



From the study of a series of specimens from various locahties 

 it has become evident that some of these discrepancies are due to 



Figure 7. — Dicranolejeunea axillaris (Necs & Mont.) Schiffn. 

 A. Part of a secondary shoot, showing a primary inflorescence with peri- 

 anth and the bases of two innovations, postical view, X 17- B. Part of a 

 secondary shoot, showing the base of a branch of the Frullania type, postical 

 view, X 17. C. Two leaves, antical view, X 17- D- Part of a lobule, show- 

 ing the two marginal teeth, X 225. E. Apical tooth of another lobule, 

 X 225. F. — H. Bracts and bracteole from a primary inflorescence, X 27 

 I.— K. Bracts and bracteole from a secondary inflorescence, X 27. L. Trans- 

 verse section of a perianth in upper third, X 40. The figures were drawn 

 from specimens collected by Spruce in the Andes of Ecuador and distributed 

 in his exsiccatae. 



the variabihty of the species, but that others can hardly be explained 

 in this way. The writer finds that the leaves are sometimes rather 

 closely imbricated (Fig. 7, A— C) and that sometimes they scarcely 

 overlap at all. The lobes taper gradually and are sharply pointed 



