78 The Ottawa Naturalist. [August 



" Meteoriaceae, " differing from Hookeriaceae only in pen- 

 dent stem, may be considered as a group ( MeieortecB ) of this 

 family ; but the genus Papillaria (not found in N. America) may 

 consist of a proper family, PapillariacecB. 



" Thuidiaceae " are rather a group (Thuidiece) of 

 Hypnaceae. 



" Hypnum ni^rescens, Swartz" was related by Jager and 

 Sauerbeck to Papillaria, by myself (Bot. Centralblatt, 1899, 2) 

 to a new genus, Tricholepis. Its characters are : 



Capsule exserted; peristome double; endostome "tricholepide" 

 (with filiform segments). Calyptra glabrous. Leaves limbate by 

 short cells ; inner cells minute, shortish, faintly or not papillose; 

 costa short, double. Stem pendent. " Meteorium nigrescens 

 Mitten." Lesq. et James, Manual of the Mosses of N. America. 

 It is to be placed in the family CryphcBtacea. 



^^ Leskea tristis Cesati," was found in- Japan in fruiting state, 

 described^s Haplohymenium Sieboldi, by Dozy and Molkenboer, 

 but identified by Mitten. Its name may be HaplohymenitLm iriste 

 (Cesati) Kindberg, Revue Bryol., 1899, 2, so characterized : 

 Capsule globose; endostome wanting; lid rostrate; pedicel red. 

 Calyptra rough and hairy. Stem without paraphyllia. Leaves 

 crenulate by papillae; alar cells indistinct. Dioecious. Family: 

 Anomodontacece. 



Hypopterygiacece. Secondary stem (as in many hepatics, viz. 

 Jungermania) furnished with amphigastria. Leaves quite di- 

 stichous (not subdistichous as in Neckeracece); primary stem 

 rhizomatic (subterranean), the secondary tree-like ; leaves smooth; 

 cells subrhombic; cpsta simple; capsule symmetric; endostome 

 " dicholepide 'S&ift&lepide" (with carinate and fiS??5v? ^egments) ; 

 calyptra cucullate; pedicel smooth. Pleurocarpous. 



HYPOPTERYGIUM, Bridel. 



I. ■ Hypopterygium canadense, Kindberg, Revue Bryol., 

 i8gg, 2. 



Branch-leaves small, crowded and appressed, broadly ovate 

 apiculate, dentate nearly all around, narrowly limbate by hyaline 

 narrow cells; other cells subrhombic, about 0.02 mm.; costa short- 



