

parcillel Lo Mio stem (Fig. 41 ). Soon Uu ■ -c in 

 Uio sporocarp mother cell, r. curvncl imticline nearl;; pr.n.l- 

 lel to either its cicroscopic oi- its btisiscopic v/iill, then 

 a similar tr.-jisverse luiticline on the opposite side of the 

 mother cell (Figs. 33, 39), and there is thus lonned a 

 tv/o sided apical cell like thi\t of the leaf, v/ith its 

 edges directed across the leaf. The sporocarp, as it 

 arises thus from tlie v/hole of a marginal cell, which h:'.s 

 not yet given rise to tlie three meristem layers that it 

 is capable of forming, is not, strictly spealting, epidennal 

 in origin. In its origin, by a tv;o sided apical csil 

 formed in a marginal cell of the leaf, the sporocarp re- 

 sembles closely the solitary sportmgium of Lygodiujn, 

 which as was shov.n by Prantl ( Sadebeck *S2, Fig. 64) a- 

 rises from a marginal cell of the fertile pimrale. 



The apical cell of the sporocarp thus fonned goes 

 on cutting off segments alternately toward end av/ay from 

 the leaf apex, which aa-e to fonn the right and left sides 

 of the sporocarp, till more thon twenty have been formed 

 on eacl: side. It thus gives rise to a slirfitly tapering 

 conical structure, much like the young leaf, v/hicli bends 

 laterally to grov; up beside the leaf (Fig. -!l) with its 

 ventr;! side facing in the stune direc'. ion, but soon begins 

 to bend ventrally upon itself (Fig. 4r:). Finally about 

 the time tl^it apical grov/t-h ceases, th.e upper part or cap- 



