(148 ) 
Fig. 3. One half cross section of leaf, & 285. 
Fig. 4. Marginal cells % down leaf, 285. 
Fig. 5. Upper part of stem, about natural size. 
Fig. 6. Apex of leaf, < 80. 
PLATE 23. Brachythecium petrophilum. 
Fig. 1. Plant, about natural size. 
Fig. 2. Stem leaf,  4o. 
Fig. 3. Branch leaf,  4o. 
Fig. 4. Perichaetial leaf, < 4o. 
Fig. 5. Capsules, < 9. 
Fig. 6. Part of peristome, 160. 
Fig. 7. Part of annulus, 160. 
Fig. 8. Alar cells, 160. 
Fig. 9. Apex of leaf, 285. 
Fig. 10. Exothecal cells near middle of capsule, X 160. 
Fig. 11. Stoma. 
Fig. 12. Section of pedicel near middle, showing papillae, & 285. 
Fig. 13. Median leaf-cells, 285. 
PLATE 24. Harpidium amblyphyllum. 
Fig. 1. Stem leaf, 12. 
Fig. 2. Branch leaf, < 12. 
Fig. 3. Capsules, < Io. 
Fig. 4. Perichaetial leaf, 12. 
Fig. 5. Apex of stem leaf, X 285. 
Fig. 6. Cross section of stem, X I60. 
Fig. 7. Part of peristome, < 160. 
Fig. 8. Median leaf-cells, < 285. 
Fig. 9. Base of leaf on one side, 285. 
Fig. 10. Stoma, > 160. 
3. ae Enumeration of the Pteridophytes Collected by:R. S. Williams 
and J. B. Tarleton. 
By lL. M. UNDERWOOD. 
Family OPHIOGLOSSACEAE. 
Botrychium Lunaria LL. Dawson (Williams). 
Family PoLYPoDIACEAE. 
Polypodium vulgare L. Skagway (Williams); 50 miles 
above Stewart River (Tarleton). 
Filix fragilis (L..) Underw. (Cystopteris fragilis Bernh.) 
Dawson and near mouth of the Klondike (Williams) ; 
miles above Stewart River (Tarleton). 
