Species of Heterocladium 131 



4 



33. Portion of ultimate branch showing arrangement of leaves when moist. 



Xi8#. 



34. Portion of ultimate branch showing arrangement of leaves when dry. X *8^. 



35, 36, 37. Outlines of ultimate branch leaves. X 2 S- 



38. Oblique view of ultimate branch leaf showing papillae. X %7}4' 



39. Apex of ultimate branch leaf. X I2 °- 



40. Operculum. X *5- 



Plate 14. Heterocladium Macounii 



I.TPlant, natural size. 



2. Portion of secondary stem showing arrangement of leaves. X l % l /2* 



3, 4. Outlines of secondary stem leaves. X 2 5» 



5. Basal portion of secondary stem leaf. X I2 °- 



6. Apex of same. X I2 °- 



7. Apex of some of the secondary stem leaves. X I2 °- 



8. Central cells from secondary stem leaf. X 2I °- 



9. Marginal cells from same. X 2I °- 



10. Marginal cells showing papillae. X 5°°- 



11. Cross section of secondary stem leaf showing papillae. X 2 7°- 



12. 13, 14. Paraphyllia. X 57/^- 



15. Outline of ultimate branch leaf. X 35- 



16. Apex of ultimate branch leaf. X I2 °* 



17. Cross section of stem. X S1%- 



18. Capsule. X 8. 



19. Operculum. X *5- 



Heterocladium heteropterioides 



20. Plant, natural size. 



21. Portion of stem showing arrangement of leaves. X l8 K- 



22,23. Outlines of stem leaves. X 2 5- 

 24, 25. Paraphyllia. X 162^. 



26. Basal portion of stem leaf. X 2I ° 



27. Apex of same. X 2I °- 



28. Central cells from stem leaf. X 2I ° 



29. Marginal cells showing papillae. X 5°°- 



30. Cross section of stem leaf showing papillae. X 2 7°- 



31. 32. Outlines of ultimate branch leaf. X 45* 

 ^^. Apex of ultimate branch leaf. X 21 °- 



34. Cross section of stem. X 57K- 



35. Capsule. X 8. 



36. Operculum. X I1 /4- 



37. Portion of annulus and capsule. X I2 °- 



