SECOND GEOLOGICAL SURVEY OF PENNSYLVANIA - REPORT OF PROGRESS P. ATLAS TO THE COAL FLORA OF PENNSYLVANIA AND OF THE CARBONIFEROUS FORMATION THROUGHOUT THE UNITED STATES BY LEO LESQUEREUX; ©1879

87 Plates and Their Captions: Scans and Webpage ©George Langford III, 2010

Plate XLIV (links in the Figure numbers point to Lesquereux's descriptions in the text)

Figure Scientific Name 1, 1a, 3 Pecopteris erosa, Gutb. 2, 2a Pecopteris cristata, Gutb. 4, 4a Pecopteris dentata, Brgt.