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y8 The Ottawa Naturalist. [August 



" Meteoriaceae, " differing- from Hookeriacese only in pen- 

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

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

 consist of a proper family, PapillariacecB. 



" Thuidiaceae " are rather a group ( Thuidiecc ) of 

 Hypnaceae. 



" Hypnum nigrescens, Swartz" was related by Jaeger 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 glabrpus. Leaves limbate by 

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

 costa short, double. Stem pendent. " Meteorhan nigrescens 

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

 It is to be placed in the family Cryphfetacecp. 



** Leskea tris/is Cesati," was found in Japan in fruiting state, 

 describedas Haplohymenium Sieboldi, by Dozy and Molkenboer, 

 but identified by Mitten. Its name may be Haplohymenium 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 : 

 A nom,odontacece. 



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

 Jungermania) furnished with amphigastria. Leaves quite di- 

 stichous (not subdistichous as in Neckeracecr); primary stem 

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

 cells subrhombic; costa simple ; capsule symmetric; endostome 

 " dicholepide stenolepide" (with carinate and narrow segments); 

 calyptra cucullate; pedicel smooth. Pleurocarpous. 



HYPOPTERYGIUM, Bridel. 



I. Hypopterygium canadense, Kindberg, Revue Bryol,, 

 1899, 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; 



