— 70 — 
green, a purplish pigmentation is sometimes present in the stems and leaves and 
may be fairly extensive. The differences in the cuticle are of even less impor- 
tance. The differences in the form and disposition of the leaves, however, are 
Figs. 8, 9. Plants with perianths and perigonial bracts, dorsal view, Fig. 9 showing also a 
stolon, 15. 
Fig. 10. Sterile plant, dorsal view, X 15- 
Fig. 11. Cells from the middle of a leaf, X265. 
Fig. 12. Marginal cells of the same leaf, X265. 
Fig. 13. Longitudinal section of a young sporophyte and surrounding parts, X25. 
Fig. 14. Transverse section of the stalk of a young sporophyte, X200. 
Fig. 15. Cells from the mouth of a perianth, X200. 
The figures were all drawn from specimens collected in the mountains west of Ingonish, 
Cape Breton, Nova Scotia, by G. E. Nichols, No. 1725. The rhizoids and the verruculae of the 
leaf cells are not represented. 
often very striking. In N. subelliptica the leaves are especially characteristic 
on sterile stems, like the one shown in Fig. 10. It will be noted that the lines 
of attachment, as Muller states, are almost transverse, that the basal parts of 
