14 PENNSYLVANIAN FLORA OF NORTHERN ILLINOIS 



Sphenoph y Hales : 



Sphenophyllum emarginatum (Brongniart) Koenig 

 S. majus (Bronn) Bronn 



Lycopodiales: 



Lepidodendron lanceolatum Lesquereux 

 L. latifolium Lesquereux 

 L. wortheni Lesquereux 

 L. rigens Lesquereux 

 Lepidophyllum majus Brongniart 

 Lepidostrobus communis Lindley and Hutton 

 Lepidostrobus ovatifolius Lesquereux 

 Lepidophloios protuberans Lesquereux 

 Lycopodites meekii Lesquereux 

 Syringodendron porteri Lesquereux 

 Sigillaria camptotoenia (Wood) Wood 

 Stigmaria ficoides (Sternberg) Brongniart 



Filicales: 



1. Sphenopteridae: 



Sphenopteris gracilis (Brongniart) Presl 

 S. capitata White 



S. chaerophylloides (Brongniart) Presl 

 Palmatopteris furcata (Brongniart) Potonie 



2. Megalopteridae: 



Megalopteris southwellii Lesquereux 



3. Mariopteridae: 



Mariopteris muricata (Schlotheim) Zeiller 

 Mariopteris muricata var. nervosa (Schlotheim) Zeiller 

 Mariopteris mazoniana (Lesquereux) White 



4. Neuropteridae: 



Neuropteris rarinervis Bunbery 



Cyclopteris orbicularis Brongniart 



Neuropteris flexuosa Sternberg 



N. clarksoni Lesquereux 



N. ovata Hoffmann 



N. crenulata Brongniart 



N. capitata Lesquereux 



N. oblongifolia Gutbier 



N. vermicularis Lesquereux 



N. decipiens Lesquereux 



5. Linopteridae: 



Linopteris neuropteroides (Gutbier) Potonie 



6. Pecopteridae: 



Pecopteris vestita Lesquereux 



P. pseudovestita White 



P. miltoni Artis 



P. squamosa Lesquereux 



