V. MOSSES (MUSCJ): SPHAGNALES—ANDREAIALES 167 



is the rule numerous exceptions to it occur. In sterile plants 

 the branches are of two kinds, long llagellate 1)ranches which 

 hang clown almost vertically and are applied to the stem, and 

 much shorter ones that are crowded together at the apex and 

 have only a limited growth. The leaves are inserted on the 



Fi( 87, — Sphagnum (sp) ; A, B, Young protonemata, X262; C, an older protonema 

 with a leafy bud ik), X about 40; r, marginal rhizoids. 



stm by a broad base, and taper to a more or less well-marked 

 pent. According to Schimper, the divergence of the leaves 

 oi the main axis is always two-fifths, but on the smaller 

 bnnches variations from this sometimes occur. The leaves 



