216 



LYCOPODIALES 



[CH. 



species, from the Coal-field of Valenciennes, the pedicel bore 

 acicular leaves or bracts attached to the upper portion of leaf- 

 cushions arranged in vertical series (fig. E). The cones reached 

 a length of 16 cm. and a breadth of 2'5 — 5 cm.; the sporophylls 

 are borne in alternating verticils with 8 — 10 in each whorl. 

 Several megaspores (2 mm. in diameter) appear to have been 

 produced in tetrads in each sporangium. 



Fig. 201. Sigillariostrohus. 



A, C. Sigillariostrohus rhombibracteatus Kidst. (After Kidston.) 



A. Portion of strobilus. 

 C. Megaspore. 



B, D. Sigillariostrohus ciliatus Kidst. (After Kidston.) 

 E, F. Sigillariostrohus Tieghemi Zeill. (After Zeiller.) 



Sigillariostrohus rhombibracteatus Kidston i. Fig. 201, A, C. 



Kidston described this species from the Middle Coal- 

 Measures of England : it is similiar in habit and in the form of 

 the sporophylls to S. Tieghemi, but rather smaller, and the more 

 definitely rhomboidal sporophylls have a ciliate margin, The 



1 Kidston (97) Pis. i. ii. p. 50. 



