t 
Parr IL. Sxor. iv.§ 1.] CARBONIFEROUS. | 729 
type of root common to more than one kind of tree. The genus 
Cordaites attained a great profusion in the time of the Coal-measures. 









eos Soa. | 
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Be SS / 
Vy =n 
i 

Fic. 348.—CARBONIFEROUS Lycopops. 
a, Lepidodendron (4); 6, Lepidostrobus, nat. size. 









Fic. 349.—a, S1GILLARIA; PORTION OF DECORTICATED STEM; B, SIGILLARIA STEM 
TERMINATING IN STIGMARIA RooTs AND ROOTLETS. 
It carried narrow or broad, parallel-veined leaves, somewhat like - 
those of a Yucca, which were attached by broad bases at somewhat 
