( 51 ) 



52. HYPNUM, Dill. 



1. tamariscinum, Hedw. Ground, and logs. 



2. delicatulum, L. Grouud iu dry places. 



3. minutulum, Hedw. Decaying logs in woods. 



4. scitum, Beauv. Base of trees. 



5. gracile, Br. & Scb. Decaying logs. 



6. abietinum, L. Mountain swamps. 



7. paludosum, Sulliv. Swamps. 



8. triquetrum, L. Grouud in woods. 



9. brevirostre, Ehrh. Mountain swamps. 



10. splendens, Hedw. Ground in woods. 



11. umbratum ; Ehrh. Shady rocks and swamps. 



12. AUeghanienss, 0. Mall. Rocky margins of rivulets 



13. hians, Hedw. Grouud iu woods. 



14. Sullivantii, Spruce. Rocks in woods. 



15. strigosum, Hoffm. Hillsides in woods. 



16. piliferum, Schreb. Ground, <fcc, in dense woods. 



17. Boscii, Schwaegr. Ground iu hilly districts. 



18. serrulatum, Hedw. Ground in dry woods. 



19. rusciforme, Weis. Mountain rivulets. 



20. recurvans, Schwaegr. Decaying logs. 



21. demissum, Wlls. Moist exposed stones or rocks. 



22. eugyrium, Bryol. Europ. Rocks near streams. 



23. palustre, L. Mountain rivulets. 



24. ochraceum, Turn. Mountain rivulets. 



25. cuspidatum, L. Marshy places. 



26. Schreberi, ^Villd. Ground in moist woods. 



27. cordifolium, Hedw. Swamps. 



28. stramineum, Dickson. Sphagnous swamps. 



29. uncinatum, Hedw. Swamps arid bogs. 



30. fluitans, L. Stagnant water, and swamps. 



31. aduncum, Hedw. Swamps and bogs. 



32. filicinum, L. Wet places. 



33. Crista-Castrensis, L. Ground and logs. 



34. molluscum, Hedw. Moist places. 



35. cupressiforme, L. Shady places. 



36. imponens, Hedw. Ground, and decaying logs. 



37. reptile, Michx. Base of trees. 



38. curvifolium, Hedw. Earth, and decaying logs. 



39. Haldanianum, Grev. Earth, and decaying logs. 



40. pratense, Koch. ~W"et rocks, and grounds. 



41. velutinum, Dill. Sandy banks in woods. 



42. salebrosum, Hoffm. Grouud, and decaying logs. 



43. lsetum, Brid. Ground, and decaying logs. 



44. acuminatum, Beauv. Earth, and decaying logs. 



45. plumosum, L. Rocks near streams. 



46. rutabulum, L. Spriugy places. 



