M outer lai'er^; oT 



^idjacon'.' cori, bouii latorarh' and irlon-- -l-.lir; nndi'-v. •••• '1 

 (i - G.C., Fi^. .'"r^). Fir.all;; by '-icrea'jo in nujiioer 



iincl sizG or til'. 56 spacer., iJie i.ndnr,'"--n ol' r,r--'^^. Vo- 



cones entirely separated irom tliose ol' jt sor ' 



(Fig, Go), By this time also tlio S(. -,...,... uido r. " 



:iie capsule push into the furrov/s "ber'een sori :y- 



posite side (Fig. f^?) , uiey then appea-^ ■'■r, l-.n - 1 ■',---,-;■ -^ "i^ 

 on opposite sides of tlie capsule, and as v/o have seen :■.- 

 bove (Fl^: ^^) their are also alte nate r'^. ■" -ir ori.-:;in; 

 "bir afi-er ' ■ origin they may often apoear to "be nearl" 



opposite, as ;. resuli. of '"" •"'nequ.al grov;... c^ .e tv/o 

 sides of the capsule. 



The primary raicrosporangium mother cells ?.re th.en 

 shovm to be sister cells of the primary macrosporimgiur: 

 mother cells, and are differentiate':", from th.er.n before . 

 latter begin to divide into ''he ultim:\te maci'osporLaigirn 

 motlier cells. H'^nce they cra-i not a-'isn f-om segments 

 of the apical ell of 'acJi of tiiG latter as Kusso'" and 

 B^.sgen believod. The placen-^.l brndln }ias -Isc bc^-in 

 shovm to come nei her from the iiuier enu.; 

 of the apical cell of tlic ma.crosncrL'jif; -j, Bfisren c-n-.l 



Russov: 'hought, nor even to be derived in any 

 from th.e ^^^[inal cell, but to be formed from tlie pler>. . 

 of section VI . 



