1 Portion of the truncate base of the fossil trunk, bearing scars 



(X) of the typical Stigmaria from which slender, collapsed, 

 ribbonlike rootlets stream downward in the shale matrix. The 

 latter, which agree in superficial characters with the Carbonic 

 forms, are seen in plate i also, proceeding directly from the 

 truncate base, no large bifurcating roots being shown in the 

 specimen. 



2 Small area showing stigmarian cicatrices (X) more distinctly. 

 3, 4 Details of stigmarian cicatrices, slightly enlarged. 



