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 XXX (links in the Figure numbers point to Lesquereux's descriptions in the text)
Figure
Scientific Name
1 - 4
Alethopteris Helenae, Sp. nov.
5, 5a
Pecopteris augustissima ? St.
Lesquereux - Plate XXX