SYNOPSIS OF BRITISH MOSSES. 



CONSPECTUS OF GENERA. 



Division I. SACCOMITRIA. F \^ 

 Order I. EOLOGABPM. 

 Caps, bursting irregularly, Calyptra lacerate. 



Tribe i. Akchidiace^. 



L. with a more or less elongate subula, nerved, 

 smoothj laxly reticulated. Caps, globose, sessile. Spores 

 large, smooth, many-sided. 



Genus 1. Arehidium, Brid. As above. 



Order 11. SGRIZOGAEPM 

 Caps, on a pseudopodium, dehiscent by valves. 



Tribe ii. Andeeace^. 



Acrocarpous, perennial. Branches dichotomous when 

 old. L. generally brown or blackish, never green, 

 patent or secund, cells thick-walled, rotundate-hexa- 

 gonal above, rectangular below, genei-ally papillose. 

 Calyptra mitriform, thin. Caps, dehiscing in 4 — 6 

 valves. 



2. Andreaea, Ehr. Caps, dehiscent below the middle 

 by perpendicular valves. 



