PLATE XIII. 



1. Thamnium alopecurum. 



a. leaf, magnified. 



b. veil, magnified. 



c. sporangium, magnified. 



2. Climacium dendroides. 



a. leaf, magnified. 



b. sporangium, magnified. 



c. portion of peristome, magnified. 



3. Leucodon sciuroides. 



a. leaves, magnified. 



b. leaf-cells, magnified. 



c. sporangium, magnified. 



d. portion of peristome with ring, magnified. 



4. Antitrichia curtipendula. 



a. leaf, magnified. 



b. sporangium, magnified. 



c. portion of peristome, magnified. 



d. portion of inner peristome, more highly magnified. 



5. Leptodon Smithii. 



a. leaves, magnified. 



b. veil, magnified. 



c. sporangium, magnified. 



d. portion of peristome, magnified. 



6. Anomodon viticulosum. 



a. leaf, magnified. 



b. sporangium, magnified. 



c. portion of peristome seen from within, magnified. 



