PLANT WORLD— Vol. L 



Plate IV. 



^. Oo. £. cCi£. 



EXPLANATION OF FIGURES. 



1— Two plants, natural size. 2— Male plant, anterior view. 3 — Female Plant, anterior view. 

 4 — Part of sterile stem, posterior view, only a portion of the rootlets indicated. 5, 6— Underleaves. 

 7 — Cells from middle of leaf. 8 — Transverse section of stem, showing the thin-walled internal 

 cells, and the superficial cells with their thickened walls. 9 — Transverse section of leaf-cells. 

 10 — Cells from apex of one of the teeth, n — PerichcCtial bracts with connate bracteole. 12— Peri- 

 chastial bract. i3-i,s — Paraphyses mixed with the antheridia. Figures 2-15 variously magnified. 



All the figures are drawn from specimens collected by the writer at Jackson, New Hampshire. 



