sect, i CRYPTOGAMS 423 



Their flowers (Lepidostrobus) had the form of scaly-leaved cones ; each sporophyll 

 hore a large sporangium. Many forms were heterosporous. 



To the Lycopodinae may probably be assigned also the Sigillarieae, arborescent 

 plants resembling the Lepidodendreae. Their stems were either very sparingly 

 dichotomously branched or entirely unbranched, and were characterised also by 

 secondary growth. The Sigillarieae were probably also heterosporous. They 

 differed from the Lepidodendreae in the form and arrangement of the leaf-scars, 

 and in their long-stalked, cone-like flowers with basally expanded sporophylls. 



The fossil remains of the Carboniferous plants known under the name of 

 Stigmaria correspond to the roots of Sigillarieae and Lepidodendreae. 



