

soon becomes fldtten^u i.iLor..xi- {V-i^. ), vj^lx 'iuiv'ri,; 

 its eai'ly dovelopmoni is clocoly approsGecl a-jainot Hie 

 petiolo (Fi^-, 43) anci tliickly covGrod b;^ the tricliomes 

 arising from the capsule itself and from the stalk of ;.. 

 sporoci-irp. Tlieso trichornes iiave boon omitted in all 

 drawings because if they had been dravm they would have 

 liidden tlie more important details in miuiy of the figures. 

 Tile shape and size of the segments cut off from the 

 apical cell here, £ire very nearly like tliose of tlie laef, 

 and their early divisions are exactly the same. Section 

 walls I and II (Fi.^'. '•--) are forraed in tlie same posi- 

 tion as in the segments of th e leaf, then the transversv 

 anticline appears in the marginal cell (t.a.^ , Fig. 5C) 

 forming two of these oi tlie third grade, and section 

 \7all III is formed in each of these in the usui^l posi- 

 tion ( III , Fig, 44 ). Thus up to this stage the series 

 of figures given for tiie leaf ( Figs. 7-11 ), is equall; 

 suitable for the sporocarp* After the formation of v/all 

 III , however, the regular alternation, t.hat continues 

 in the leaf till the last section wall is fonned, is here 

 broken by the appearance of wall IV on the dorsal side 

 of the mtu'ginal cell and parallel to III , instead of 

 on tliG ventral side as in the loaf ( lY _# Fig. 4.- ). 

 Wall V in the sporocaiT. is then fomed toward the ven- 

 tral side of the marginal cell, in the position of v;all 



