Jan., 1913.] Notes on Ohio Mosses. 63 



Webera sessilis (Schmid.) Lindb. This moss had not been 

 represented m the State Herbarium, but about a year ago it was 

 found at Sugar Grove and since then has been found near Christ- 

 mas Rocks. The capsules of this species, hke those of Buxbaiunia, 

 point toward the source of the hght supply. Sullivant gives its 

 habitat as ''Clayey or barren soil ; not unfrequent in hilly districts ", 

 while Lesquereux and James give it as "Clayey and shady 

 sandy banks along roads ' ' . The habitat of that in the Lancaster 

 region seems to be soinewhat unusual, as in the three places where 

 the species was collected — in two ravines at Sugar Grove, and near 

 Christmas Rocks — the plants were growing on the vertical faces 

 of sandstone, in one instance being associated with Bryoziphiuni 

 norvegicum. 





Fig. 1. Buxbaumia aphylla. 



Mnium punctatum (Hedw.). This species has not previously 

 been recorded in the State Herbariuin, but it seems to be fairly 

 common in the Hocking Valley. Sullivant says that it occurs in 

 "wet places, on the grotmd, Alleghany Mountains", and Les- 

 quereux and James say "Cold springs and borders of brooks, on 

 mountains, rarely fruiting." In the Sugar Grove region it is 

 usually found near the heads of the ravines where the water runs 

 or trickles over the rocks, and is often associated with liverworts. 

 In the locality where the most luxuriant growth of Bryoziphium 

 norvegium was found, Mnium punctatum is associated with it and 

 grows on the vertical faces of the sandstone cliffs. 



Polytrichum piliferum Schreb. This small Polytrichum is 

 common in the Sugar Grove region and occurs on exposed ledges 

 of the sandstone. It is often found in association with one or 

 more of the other Polytrichums but grows in more exposed places 

 than any of the others. It is a common thing to find Polytrichum 

 piliferum growing in very thin dry soil on the inost exposed 

 ledges of sandstone, while a little farther back where the soil is 

 slightly deeper Polytrichum juniperinum grows, and still farther 

 back in more sheltered places, Polytrichum commune or Polytri- 

 chum ohioense. So far only sterile specimens have been collected, 



