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FIELD AND FOREST. 



Mosses of the District of Columbia. 



Prepared by Rudolph Oldberg. 



MUSCI. Mosses, 



Sphagnum, Dill. Peat-rnoss. 



I. cymbifolium , Dill. Bogs and swamps. 



2. squarrosum, Pers. " '' 



3. acutifolium, Ehrh. " " 



4. cuspidatum, Ehrh. " " 



Andr/ea, Ehrh. 



5. rupestris, Tourn. Rocks in mountains. 

 Phascum, L. 



6. cuspidatum, Schreb. Old fields, &c. 



7. alternifolium, Brid. Fields, &c. 



8. subulatum, Schreb. Old fields. 



9. Sullivantii, Schinip. Moist ground. 



Bruchia, Schwaegr. 



to. flexuosa, Schwaegr. Damp ground. 



Weisia, Hedw. 



II. viridula, Brid. Old fields, hillsides. 

 Trematodon, Rich. 



1-2. longicollis, Rich. Clayey and sandy 

 soils. 



Dicranum, Hedw. 



13. varium, Hedw. 



14. heleromallum, Hedw. Moist grounds. 



15. scoparium, L. Earth and decaying 



logs in woods. 



Ceratodon, Brid. 



16. purpureum, Brid. Earth. 

 Leucobryum, Hampe. 



17. glaucum, Hampe. Roots of trees and 



swampy grounds. 



18. minus, Hampe. Earth in dry woods. 



Fissidens, Hedw. 



19. mimutulus, Sulliv. Damp rocks in 



shaded ravines. 



20. osmundioides, Hedw. Roots of trees 



in swamps. 



Trichostomum. Br. & Schimp. 



21. pallidum Hedw. Clayey grounds. 



22. glaucescens, Hedw. Dry hillsides. 

 Barbula, Hedw. 



23. unguiculata, Hedw. Clayey soils. 



24. csespitosa, Schwaegr. Woods about 



roots of trees. 



Pottia, Ehrh. 



truncata, Br. Schimp. Earth. 



Tetraphis, Hedw. 



25. pellucida, Hedw. Earth in woods. 

 Drummondia, Hook. 



26. clavellata, Hook. Bark of trees. 

 Orthotrickum, Hedw. 



27. Canadense, Br. & Schimp. Trees. 

 Schistidium, Br. & Schinip. 



28. apocarpurn, Br. & Schimp. Rocks. 

 Grimmia, Ehrh. 



29. Pennsylvanica, Schwaegr. Rocks and 



stones. 

 Racomitrium, Br. & Schimp. 



30. fasciculare, Brid. Moist rocks. 

 Hedwigia, Ehrh. 



31. ciliata, Ehrh. Rocks and bowlders. 

 Diphyscium, Web. & Mohr. 



32. foliosum, Web. & Mohr. Clayey or 



barren soils. 

 Atrichum, Beauv. 



33. undulatum, Beauv. Moist clay banks. 



34. angustatum, Beauv. Shady woods 



and swamps. 



Pogonatum, Beauv. 



35. brevicauie, Brid. Moist clayey banks. 



36. urnigerum, Brid. Mountains. 



Polytrichum, Brid. 



37. commune, L. Shady moist places. 



38. Juniperinum, Hedw. Margins of 



woods. 

 Aulacomnium, Schwaegr. 



39. heterostichum, Br. & Sch. Shady banks. 



