1 84 



THh PLANT WORLD. 



EXPLANATION OF FIGURES. 



I — Plants, natural size. 2 — Part of sterile stem, anterior view. 3— Part of sterile stem, posterior 

 view, showing lateral flagella. 4— Part of fertile plant, posterior view, showing n:ale branch. 

 5 — Part of fertile plant, posterior view, showing female branch with perianth. 6— Transverse 

 stem. 7— Cells from middle of leaf. 8-10— Perigonial bracts. 11— Bracteole. 12 — Uppermost 

 section of perijhaetial bract. 13— Corresponding bracteole. 14— Cells from middle of bract. 

 15— Transverse section of perianth. Figures 2-15 variously magnified. 



All the figures are drawn from specimens collected by Miss Anna Murray Vail in the Cats- 

 kill Mountains, New York. 



