n. 



tlie "irGt GG rientc, v;hir]' f^ur.G v/it.li t.'ie ti^nn.e of t.!'e stem, 

 30 t'-:ii-. it. is not oertr'in tlir^t tl^o se^Tnort. niin'hernc' 1 in 

 Fi'". 4, m^-Y not really 'be tlio second one. Aside froia this 

 tlie severr.l leaves examined in v.rhicli apical ^-rov/tli liad endc:' 

 arreed vor^'' closel^'' as to the nnr.'ber of se^'T'ients formed. 



The yoimr leaf at tlie end of sef^nentation of its apical 

 cell, is about Imm. long and .lOrmn. in dirjieter at the hase^ 

 and nearly up to this tine it lias tlie form of a sliditly 

 taperin-"'; cone, capped "by the bulginf^ apical cell, v/liich. 

 curves upward and ventrally (Fi-';, 4) over tlie stem a.pex, by 

 m.ore rapid rrovrth on tlie lov/er and dorsal sides. The cros':. 

 section of the leaf at t^us starve is almost exactl"' circular. 

 The leaf not being, until tlie f oiTiation of the pinnae , at a^ 

 flattened°spatulate, as described by CampTjell ('95) and fig- 

 ured by Hanstein ('6''0 in M, Drumriondii. 



Just before tlie last fev: segments are form.ed, the tenth 

 and eleventh, or eleventh and tv;elfth, segm.ents from the base 

 on eacli side, begin to sv/ell out laterally and ventrally to 

 form tlie first pair of pinnaS of th.e lamina (p,',Fig. 31). 

 Soon after tlie last se.gment is cut off from the apical cell, 

 the serments beyond the first pair of pinnae devolope th.e 

 second and terminal pair of leaflets (p?.Fig. 32). If th.e 

 leaf bears one or more sporocarps, the first of tlicse arises 

 on the lov/er and anterior side of the petiole from the secon 

 serment on its side from the base (Fi.'> 38). llie second 



