LYGINODENDRON 397 



the Marattiaceae, a view which was generally adopted 



Fig. \^i.—Crossothcca Honinghausi (the microsporangiate fructification of Lyginaden- 

 d?-on ohihamium). Fertile pinna, contained in an ironstone nodule. On the ultimate 

 branches of the rachis are borne the somewhat peltate fertile pinnules, from the under 

 surface of which the long microsporangia hang down. X j. Enlarged from a 

 photograph lent by Mr. R. Kidston, F.K.S. 



