188 



LYCOPODIALES 



[CH. 



The branched example figured by Lindley and Hutton^ as 

 a variety {L. ornatus var. didymus) illustrates a phenomenon 

 not uncommon in both Palaeozoic and recent lycopodiaceous 

 strobili. 



11 



Lepidostrohus oldhamius Williamson^ Fig. 191, A — D. 



Williamson^ instituted this term for strobili previously 

 described by Binney*, without adequate evidence, as the cones 



Fig. 191. Lepidostrohus. 



A — D. L. oldhamius. 



B, C, D. From sections in the Binney Collection, Cambridge. 



E. Megaspore. (After Kidston.) 



F. Megaspore (Coal-Measures, Halifax). (After Williamson.) 



G. Megas-pore o{ Lepidostrohus foliaceus. (After Mrs Scott.) 

 H. Tangential section of sporangium. (After Bower.) 



I. Part of sporangium wall, Sm, of the cone of Lepidodendron 

 Veltheimianum, enclosing two megaspores. (Cambridge Botany 

 School.) 



1 Lindley and Hutton (37) A. PI. 163. 



2 For a detailed account of this type, see Maslen (99). 



3 Williamson (93) p. 28. ■» Binney (71). 



