23 

 APHYLLUM ASPERUM. 

 ROUGH APHYLLUM. 



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Generic Character. 

 Stem arborescent, covered with fleshy scales,, inserted in hollows furnished with 

 lands. 



Specific Character. 

 APHYLLUM asperum. Stem tapering ; scales long, rhomboidal, those in the 

 lower part of the stem separated by a considerable interstice resembling bark. 



Synonyms. 

 It does not appear that this fossil plant has been hitherto described or figured by 

 authors. 



Description and Locality. 



Stem arborescent, tapering, the base being twice the diameter of the upper part, 

 covered with scales. 



Scales long, rhomboidal, with the angles rounded, rough with irregular longi- 

 tudinal wrinkles, the interstices separating the scales much wider at the bottom of the 

 stein than at the top ; those at the bottom wrinkled, resembling the bark of an elm. 



Found imbedded obliquely in shale, near a rent in the strata, in a continuation 

 of the El-se-car nine feet coal, situated near Hoyland, in Yorkshire. 



Observations. 



The stem, of which two portions are figured, was about, eleven feet in length. 



The first figure represents a portion of the upper part of the stem, with the scales 

 attached ; the second a portion of the lower part, with so much of the scale attached 

 jis fills up the hollow, and is connected by the gland, the back of the scale having 

 been detached bv adhering to the matrix. 



A shews the cicatrix with its transverse gland which connects the scale in the upper 

 part of the trunk. At B is seen the interstice which separates the scales in the lower 

 part of the stem. And at C is a section of the hollow cicatrix. 



