Plates 



Explanation of the Method of Lettering the Figures 



To facilitate reference and comparison of the various plates a series of 

 letters and figures has been used which applies uniformly to all plates. 



a — Apex 

 an — Anniilus 

 B — Branch 

 b — Base 



be — Basal median 

 c — Central or Median 

 ci — Cilia 

 CT — Cross-Section 

 d — Dorsal 

 g — Gemmae 

 Im — Lower Margin 

 m — Margin 

 o — Lid or Operculum 

 P — Plant, habit sketch of, or 

 of a plant 



of 



a portion 



sp — Spores 



S — Stem 



s — Peristome-segments 



t — Teeth 



upm — Upper Margin 



-.■ — Ventral 



1 — Stem-Leaf 



2 — Branch-leaf 



3 — Perichaetial Leaf 



A — Paraphyllia 



5 — Seta 



6 — Capsule 



7 — Calyptra 



8 — Peristome 



The above letters and figures are used in various combinations. \a, for 

 instance, indicates the apex of a stem-leaf; \bc, the median basal portion of a 

 stem-leaf; lad, dorsal view of branch-leaf; 3upm, upper margin of perichaetial 

 leaf, etc. 



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