PLATES XVI-XVIII. 

 Gymnomitrium obtusum (Lindb.) Pearson. 



Fig. I. Leaf, X32. 



2. Cells from middle of leaf, X 290. 



3. Cells from apex of leaf, X 290. 



The figures are all drawn from Dr. Trelease's No. 15 12, collected at Orca. 



A^iastrofhyllum reichardtii (Gottsche) Steph. 



Fig. 4. Part of stem with perianth, antical view, X 18. 



5. Part of stem with androecium, antical view, X 18, 

 Figs. 6-8. Leaves, X 18. 

 Fig. 9. Cells from apex of leaf, X 290. 



10. Cells from middle of leaf, X 290. 



11. Cells from near base of leaf, X 290. 

 Figs. 12, 13. 9 bracts, X 18. 



Fig. 14. A part of the perianth-mouth, X 230. 



15. Transverse section of perianth in upper third, X 32. 



16. $ bract, X 16. 



17. Antical base of $ bract, X 32. 



The figures are all drawn from specimens collected by Messrs. Coville and 

 Kearney at Columbia Fiord (No. 1389). 



Cephalozia leucanika^Spruce. 



Fig. 18. Part of stem with 9 branch and perianth, X 32- 



19. Leaf, X 230. 



20. Bract with connate bracteole of innermost row, X 32- 



21. Remaining bract of the same row, X 32- 

 Figs. 22-24. Bracts and bracteole of second row, X 32. 

 Fig. 25. A part of the perianth-mouth, X 230. 



26. Transverse section of perianth above middle, X 32. 

 The figures are all drawn from No. 1393, collected at Columbia Fiord by 

 Messrs. Coville and Kearney. 



Diplophylleia flicata (Lindb.) Evans. 



Fig. 27. Part of stem with perianth, antical view, X 15. 



28. Part of sterile stem, antical view, some of the upper leaves'gemmi- 



parous, X 14. 



29. Postical base of leaf, X 28. 



30. Cells from apex of leaf, X 270. 



31. Cells from middle of leaf, X 270. 



32. Teeth and cells from postical base of leaf, X 270. 



33. Part of sterile stem, postical view, X I4- 



34. $ bract with antheridia, X 14. 



35. Cells from middle of leaf, X 270. 



Fig. I is drawn from the type-specimen, collected in 1S61 by Glehu, at Dui, 

 on the island of Sachalin, Siberia ; figs. 2S-32 arc from specimens collected 

 by Messrs. Brewer and Coe at Farragut Bay (No. 619) ; and figs. 33-35, from 

 specimens collected by Dr. Trclease at Orca (No. 1492). 



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