80 HYPXACEAE 



T. hirtella (Hedw.) Sull. Very common on bark of trees. 



Autumn. 



T. asprella (Schimp.) Sull. Cold Spring (26126)!!; New 

 Lots (26125) and Jamaica (26124), Brainerd, L. Id.! "On 

 roots of trees, old stumps and on stones in open woods, com- 

 mon," Muse. App. 263; Alpine, N. J., Jelliffe, Bx!; Yonkers, 

 Howe, Bx! Early autumn. 



T. Lescurii Sull. "On flat rocks, Palisades. On white 

 sand about base of stunted oaks in Southern N. J.," Muse. App. 

 264; sandy soil, Orient, Latham, and Rockaway and Lynbrook 

 on L. Id. Rarely fruiting. Also found in southern Ct. 



MYURELLA B. & S. 



M. Careyana Sull. "Banks of ravines about Hohokus and 

 in Mts. of X. J.," Muse. App. 265; Closter, X. J., Austin, Bx.! 



M. julacea (Vill.) B. & S. occurs in the Del. Water Gap. 



Family 22. HYPXACEAE 



Plants creeping in habit, forming mats of more or less closely 

 interwoven stems and branches, growing mainly on soil and 

 rotten wood, less frequently but commonly on stones and trunks 

 of trees, a few aquatic. 



Leaves costate or ecostate, not papillose, except Bryhnia and 

 Hylocomium species. Capsules on elongated setae more or less 

 curved and unsymmetric except in the Climacieae, Entodonteae 

 and a few anomalous mosses. Peristome usually perfect, the 

 cilia often lacking in mosses with erect capsules, segments always 

 keeled; teeth strongly articulate, marked at base between the 

 articulations by characteristic fine transverse lines except in a 

 few forms with erect capsules and degenerate peristomes. A 

 very large family closely related to the Leskeaceae, from which 

 it differs in the non-papillose (except Bryhnia) leaves and also 

 usually in the longer leaf cells and unsymmetric cernuous cap- 

 sules. The peristomes are very close to those of the Bryaceae 

 except for the fine transverse lines on the peristome teeth. 



