262 



PLANT LIFE. 



91. Fin. 2152. 



the development of a brood bud of Marchantia ; 



ill seen from 



Fig. 



Fig. 291. — Six stages 

 side. I, very young 



older, terminal cell divided trans- 

 versely. Ill, IV, V, successively older stages. VI. mature, cells not shown: two 

 growing points localized on right and left edges. I-V, magnified about 250 diam.; 

 VI, about 25 diam. — After Sachs. 



Fig. 292. — Brood buds of mosses. A , upper part of the stem of Aulacomnium audio- 

 gynu m . with a cluster of brood buds at apex (magnified about 8 diam.), one of which is 

 enlarged 120 diam. in A', />', tip of leaf of Syrrkopodon sender (magnified about i" 

 diam.) showing brood buds ; />", some more enlarged labout 40 diam.). — After Kerner. 



Fig. 293. — Young plants developing from adventitious buds on leaves of a fern (Aspic 

 vhich they readily separate to form 



muni i>ulbi/,-r iiniK from ■ 

 size. />', magnified 2 diam. 



plants. A, natural 



