262 



PLANT LIFE. 



Fig, 291. Fir,. 292. 



Fig. 291.— Six stapres in the development of a brood bud of Marcliantia ; all seen from 

 side. I, very young, the origin?-lly single cell projecting from bottom of cup (fig. 290) 

 divided into a stalk ceil and terminal cell. II, older, terminal cell divided trans- 

 versely, III, IV. V, successi\-ely 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 A uliuonmiuin audro- 

 gyniiin, with a cluster of brood buds at apex (magnified about S diam.), one of which is 

 enlarged 120 diam. in A'^ B, tip of lt;af of SyrrhopodoJ! scabcr (magnified about in 

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



A B 



Fig. 293.— Young plants (Ie\'elo]iing from adx'cntitidU'^ buds on li.a\'es of a fern (Asf>h'- 

 niitiii biilln/eruiii\, from which they readily separate to fortn new plants. A, natural 

 size, B, magnified 2 diam, — After Kerner. 



