28 DICRANACEAE 



D. pellucidum (L.) Schimp. "On rocks subject to inunda- 

 tion in deep glens near West Vernon, Sussex Co., N. J.," Muse. 

 App. 76; New Haven, Bry. Ct. Autumn to spring. 



ONOCOPHORUS Brid. 



Mosses of damp ledges, earth, and decaying wood, mostly 

 moderate in size with leaves long, slender and crispate when 

 dry. 



O. Wahlenbergii Brid. Yonkers, E. C. Howe, Bx! 



Subfamily Trematodonteae 



Plants small, caespitose. Leaves lanceolate-subulate, with- 

 out distinct angular cells. Capsules with a long slightly inflated 

 neck, which is sometimes longer than the capsule itself. Cap- 

 sule cernuous; peristome of 16 teeth which are perforate or cleft. 



TREMATODON Mx. 



Neck about the length of the urn ambiguus 



Neck about twice the length of the urn longicoUis 



T. ambiguus (Hedw.) Hornsch. Jamaica!! Summer. 



T. longicollis Mx. "Low grounds, Closter, N. J.," Muse. 

 App., 476; Toms River, N. J., Bx! 



Subfamily Dicranelleae 



Plants small, like miniature Dicrana, scarcely branched. 

 Leaves smooth, lanceolate-subulate, without specialized angular 

 cells. Capsule short, erect or inclined, frequently striate; lid 

 beaked; peristome dicranoid, of 16 teeth, cleft to the middle 

 into two filiform divisions. 



DICRANELLA Schimp. 



Small mosses resembling Dicranum in miniature, but without 

 the enlarged angular cells. The general characters of the genus 

 are those of the subfamily to which it belongs. The small size 

 and narrow silky leaves, narrowed gradually or abruptly from 

 a broader base to a channeled subulate apex, render the genus 

 easy of recognition, especially if the dicranoid capsule be pres- 



