HYPNACE.E.] 16 [Ambfystegium. 



hexagonal, papillose on both sides, yellow and longish in the middle of 

 base. Perich. bracts pale, the inner narrowed into a long flexuose 

 subula, thin-nerved. Capsule on a slender yellow seta, scarce reaching 

 above the branches, small, erect, oblongo-cylindraceous, exannulate, 

 ferruginous ; lid conico-rostellate ; teeth lineal-lanceolate, yellow, 

 papillose, inner processes short, filiform. 



HAB. Stony ground and at tree roots ; rare and sterile. Fr. 113, very rare. 



Ben Lawers (Greville). Den of Airlie (Gardiner). Near Wells, Somerset (Binstead 1887) ! ! 

 Egglestone Abbey (Baker). 



Subf. 2. HYPNE^E. Plants nearly simple, or branched irregularly, 

 pinnate or dendroid ; creeping, procumbent, ascending or erect, densely or 

 loosely matted. Leaves in many rows, divergent or squarrose, or secund, 

 often falcate, with a single nerve, rarely nerveless, smooth and glossy 

 or rarely with small papillae, usually denticulate at margin. Cells 

 prosenchymatous, often very narrow, linear and vermicular, quadrate and 

 often enlarged or coloured at basal angles. Capsule incurved, cernuous or 

 horizontal, rarely erect and regular ; endostome with 16 processes, usually 

 with cilia interposed. 



4. AMBLYSTEGIUM Br. Sch. 



Bryol. eur. Fasc. 55 56 (1853). 



Plants small, slender with creeping prostrate stems, or robust and 

 taller, ascending or in erect tufts, pinnately branched, and often with 

 paraphyllia. Leaves equal, in 5 8 rows, spreading or falcato-secund, 

 ovate or cordate, the cells minute elliptic and incrassate or elongate- 

 hexagonal or very narrow and linear, those at basal angles parenchymatous 

 often large and inflated. Capsule on a long smooth seta, oblong, 

 inclined, cernuous or rarely erect, leptodermous, lid conic, mucronate ; 

 peristome of 16 teeth, lanceolate, yellowish ; endostome tubular below, 

 with 16 lanceolate processes cleft in mid-line, cilia 23, very rarely 

 obsolete ; calyptra narrow and cucullate. Inhabiting wet ground, or 

 rocks or bogs. Der. a/*/3Avs blunt, o-reyi? a lid. 



Several apparently distinct groups are brought together under this genus, 

 which with respect to the first section appears natural enough, but when we 

 come to A. riparium we pass at once to other forms which glide into each 

 other so gradually that it is impossible to define them as genera. I have 

 therefore followed De Notaris, Mitten and Lindberg in also placing under 

 Amblystegiiim several groups of marsh Hypnums, each of which has some 



