—43- 



trichums, and Mniums. Mr. Nelson's findings on Nos. 8, 15, 27, 28, 30, 38, 45, 

 46, and 55, at the time of the presentation of this paper, had not yet been 

 received, so that they are somewhat doubtful. 



In the writer's opinion, the list represents about one-half or one-third of the 

 species which actually do occur in the territory concerned. Failure to find 

 Neckera, Webera, Pogonatum, Ptychomitrium, Philonotis, Fontinalis, etc., is 

 ascribed to scarcity or total absence of these forms. Rock-inhabiting forms, 

 such as Grimmia, are missing because their substratum also is lacking in the vici- 

 nity, the only rock-loving form being Hedwigia albicans (Web.) Lindb., which is 

 common on undisturbed granite boulders. 



As far as the substratum of the mosses collected is concerned, the following 

 points may be noted: The Anomodons are quite common on living trees, near the 

 base, — A. rostratus lower down than A. minor and seemingly preferring black 

 ash. They are the only mosses found on living trees by the writer except Ambly- 

 stegium radicale (Beauv.) Mitt. 



Catharinea, Polytrichum, Bryum, Ceratodon, Didymodon, Funaria, Dit- 

 richum, and Leptobryum are comparatively frequent on banks of roads. In the 

 tamarack swamps, on the soil or about the base of trees, or on prostrate logs, 

 Sphagnum, Mnium, Dicranum, Hypnum, Thuidium, Amblystegium, Aulacomnium, 

 and Hylocomium are to be found. Bartramia, Fissidens, and Mniobryum are 

 found on the side or bottom of ditches in the meadow. 



All the Amblystegiums, except A. orthocladon, which occurs on stones, are 

 found on decaying wood in moist situations. The same is true of the Hypnums, 

 Entodon, Platygyrium, and all Thuidiums except Th. Blarndowii and Th. delica- 

 iulum, which are found on soil in the tamarack swamp. Brachythecium acutum, 

 B. rivulare, and B. salebrosum were also collected in these swamps. Climacium 

 is very common in meadows and near the borders of swamps and ponds, but does 

 not fruit very freely. 



Following is a list of the mosses collected by the writer in the vicinity of St. 

 John's University, Collegeville, Stearns County, Minnesota, 1908-1910: 



1. Amblystegium varium (Hedw.) Lindb. On decaying wood. 



2. Amblystegium serpens (L.) Bryol. Eur. On decaying wood. 



3. Amblystegium riparium (L.) Bryol. Eur. On decaying wood. 



4. Amblystegium Juratzkanum Schimp. On decaying wood. 



5. Amblystegium orthocladon (Beauv.) Kindb. On stone in bed of brook. 



6. Amblystegium radicale (Beauv.) Mitt. Base of living tree. 



7. Anomodon minor (Beauv.) Fuern, 



8. Anomodon rostratus (Hedw.) Schimp. 



9. Aulacomnium palustre (L.) Schwaeg. Tamarack swamp, on soil. 



10. Bartramia Oederi (Gunn.) Schwaeg. Side of ditch. 



11. Brachythecium acutum (Mitt.) Sull. Among other mosses in swamp. 



12. Brachythecium acuminatum (Hedw.) Kindb. Base of trees and stumps. 



13. Brachythecium rivulare Bryol. Eur. Soil of tamarack swamp. 



