1902] Andrews, — Bryophytes of Mt. Greylock Region, — ■ II 241 



Hypnum curvifolium, Hedw. On wet rocks which receive a wash of 

 decayed vegetable matter. Base of mountain in Goodell Hollow. 



Hypnum dilatofum, Wils. On rocks in brook, middle altitude. 

 Unfruited. 



Hypnum eugyrium, Sch. On rock by brook, lower altitude, Goodell 

 Hollow. 



Hypnum Haldanianum, Grev. Earth, decaying vegetable matter, etc. 

 Middle and mostly higher altitudes. 



Hypnum imponens, Hedw. Decaying logs, generally in lower alti- 

 tudes. Nowhere in great abundance. 



Hypnum reptile, Rich. {H. pallescens \ (Hedw.) Beauv.) Very abun- 

 dant at all altitudes, on bark of trees, decaying logs, stumps, etc. 

 More robust and pale in color toward summit. 



Plagiothecium silvatkum, (Huds.) Br. & Sch. On ground and decay- 

 ing wood at lower altitudes, in Goodell Hollow. Of the three 

 Plagiotheciums occurring on the mountain, tins species seems to 

 prefer lower altitudes. P. turfaceum middle and /'. denticulatum 

 generally the higher. There is a noticeable difference in the time 

 of ripening of capsule, the order being that of the length of the 

 operculum, beginning with the shortest: J\ turf ace am, J\ denticu- 

 * latum, P. silvaticum. 



Pogonatum capillars, (Rich.) Brid. Mrs. A. M. Smith has called atten- 

 tion to the presence of this species (Rhodora, April, 1902). In 

 New England it is a species of the highest alpine mountain sum- 

 mits, adding one more to the very limited alpine flora of Greylock. 



Racomitrium Sudeticum, (Funck.) Br. & Sch. Mr. J. M. Holzinger 

 kindly determined this species, which was unfruited. It grew upon 

 the horizontal surface of a rock, near the summit, only the one 

 small tuft being seen. The leaves are unusual in mostly lacking a 

 hyaline point. It is another species of northern or high mountain 

 range, and is probably new to Massachusetts, though occurring in 

 the high mountains of the northern New England States. 



Rap/iidos tcgium recurvans, (Schwaegr.) Jaeg. Very abundant about 

 bases of trees and on decaying wood, at middle and higher alti- 

 tudes. When sterile simulating the Hypnums. 



Rhyticostegium rusciforme, (Weis) Br. & Sch. On rocks in brooks, 

 at various, especially middle, altitudes. 



Sphagnum euspidatum, Ehrh. In wet spot near summit. 



Sphagnum medium, Limpr. Low-growing, purplish form in similar 

 places. 



