30 SYNOPSIS or BRITISH MOSSES. 



Tribe xxiv. Cetph^acej;. 

 St. dicliotomous or subpinnate. L. broad or ovate- 

 acuminate, nervelesSj cells at apex minute, at. base 

 larger, quadrate, or linear. Calyptra mitrate, cucuUatej 

 or conical, sometimes with apex roughened. Caps, 

 immersed or exserted, gymnostomous, or perist. double. 



Fam. ■ 1 . Hedwigiae . 

 Br. dichotomous or irregular. L. broad, coriaceous, 

 cells quadrate, minute at apex, larger at basal angles, 

 and linear at mid-base. Calyptra mitrate or cucuUate. 

 Caps, gymnostomous. 



89. Hedwigia, Ehr. Br. dichotomous. L. strongly 

 papillose. Calyptra small, conico-mltrate. Caps, 

 globose, immersed, lid broadly convex. 



90. Hedwigidium, B. and 8. St. irregularly branched, 

 stoloniferous. L. solid, smooth. Calyptra bi- trilobed 

 or cucullate. Caps, exserted, lid conical. 



Fam. 2. Cryphsese. 

 Perich. branch often elongate. Calyptra conico- 

 mitrate, roughened at apex. Caps, immersed, tumid 

 at base. Perist. absent, single or double. 



91. Cryphasa,, Mohr. St. pinnate or rarely bipinnate, 

 L. ovate, acuminate, upper cells minute, rhomboid. 

 Calyptra small, conical, rough at apex. Perist. double, 

 outer of 16 narrow converging teeth, inner 16 alter- 

 nating, narrow, filiform, carinate processes. 



Section 3. PLEIJBOOARPL 

 Fruit on a lateral branch. 



Tribe xxv. Leucodontacbj;. 

 Secondary stems erect or pendulous. L. patent. 



