BENNETTITEAE 581 



the floral morphology of the different species have 

 been detected. 



The whole fructification has a length of about 



Fn;. 206. — Cyctideoitlea dacotensis. — .Median longitudinal section of a bisexual flower. 

 The peduncle, with the surrounding leaf-bases and bracts, is drawn from one section ; 

 the ovulate cone and microsporophylls are drawn from several other sections of similar 

 strobili. s, the incurved microsporophylls ; <>, the ovuliferous cone ; a, eroded outer 

 border of the armour and bracts, forming the trunk-surface ; r, ramentum between 

 outermost bracts and .adjacent leaf-base ; /, leaf-base ; c, cortex of trunk ; r, bundles 

 supplying peduncle. About ji natural size. From Wieland. 



12 cm., protruding 6omewhat beyond the leaf-bases of 

 the trunk. (See the restored section shown in Fig. 

 206.) About half this length consists of the stout 

 peduncle, which bears 100 or more spirally arranged 



