BY L. KODWAY. 11 



Div. ANARTllRODONTEI. 



Fam. 15, POLYTJEIICH ACE AE.— Robust. Leaves 

 narrow, usually harsh, linear, upper surface 

 bearing longitudinal plates. Peristome teeth 

 numerous, simple, very short, or long in 

 Dawsonia. 



Fam. 16, BUXBAUMIACEAE.— Small, erect, almost 

 leafless. Capsule flat. 



Div. SCHIZOCARPEAE. 



Fam. 17, ANDREACEAE.-Brown or blackish-purple. 

 Of hard texture. Cells round incrassate. Cap- 

 sule opening by four longitudinal slits. 



Div. SPHAGNALES. 



Fam. 18, SPHAGNACEAE.— Soft, spongy, pale. Stems 

 long, branches in whorls. Leaf cells of two 

 kinds ; large inflated tracheids, between 

 which are narrow linear chlorophyllous ones. 



Fam. 1— TORTULACEAE. 



Generally small, sometimes minute, erect with few 

 branches, rarely procumbent (Leptodontium). 

 Leaves small, usually relatively broad, some- 

 times narrower to almost linear; cells small, 

 rotund, quadrate, not incrassate, or slightly 

 so ; surface with nodulose papillae, or some- 

 times smooth ; cells of the base commonly rec- 

 tangular and colourless. Capsule erect, oblong 

 to cylindric, globose in some minute forms, 

 usually raised on a long slender seta; lid, 

 conic or rostrate ; calyptra narrow cucullate, 

 mitriform in Encalypta; peristome single, ab- 

 sent in some small forms, of 16 short teeth in 

 many others, culminating in a fine peristome, 

 with a tubular cribiform base and 32 slender- 

 twisted legs. In some small forms the cap- 

 sule has no lid, and the spores are only liber- 

 ated bv the rottino; of its walls. 



A large and well-circumscribed family, the 

 members of which will be easilv recognised, 

 but not readily defined. It is divisible into 



