GLEICHENIACEAE 



[CH. 



Fig. 485. a, dicliotomised steles o[ Slromatoptcris\ b, meristele 

 of leaf, with pinna-traces. (After J. M'^L. Thompson.) 

 (X30.) 



Fig. 484. Slromatopteris moniliformis Mett. 

 ^ = habit of one of the upright branches that 

 rise from the horizontal rhizome. j5 = portion 

 of a leaf: a, b, with sori intact: c, sporangia 

 removed, but hairs remaining: d, hairs also 

 removed, to show the receptacle : e, sterile seg- 

 ments. (After Diels, from Engler and Prantl.) 



