APPENDIX. 



Dryopteris Noveboracensis (L.) A. Gray. New York Fern. In moist woods. 

 Dryopteris Thelypteris (L.) A. Gray. Marsh Shield-fern. In wet meadows and 



marshes. 

 Dryopteris cristata (L) A. Gray. Crested Shield-fern. Bogs in Haycock, (M. C). 

 Dryopteris Goldieana (Hook.) A. Gray. Goldie's Fern. Bogs in Milford. 

 Dryopteris marginalis (L.) A. Gray. Everygreen Wood-fern. In rocky woods. 

 Dryopteris spinulosa intermedia (Muhl.) Underw. Spinulose Shield-fern. In rich 



woods, rare. 

 Phegopteris hexagonoptera (Michx.) Fee. Broad Beech-fern. In dry woods. 

 Filix bulbifera (L.) Underw. Bulblet Cystopteris. Nockamixon. 

 Filix fragilis (L.) Underw. Brittle Fern. In moist woods. 



Woodsia Ilvensis (L.) R. Br. Rusty Woodsia. Nockamixon, Dr. T. C. Porter. 

 Woodsia obtusa (Spreng.) Torn Blunt-lobed Woodsia. Rocky banks. 

 Dennstaedtia punctilobula (Michx.) Moore. Hay-scented Fern. In rich soil on 



hillsides. 

 Matteuccia Struthiopteris (L.) Todaro. Ostrich Fern. Nockamixon. 

 Onoclea sensibilis L. Sensitive Fern. In moist soil. 



Order 2. EQUISETALES. 

 Family i. Equisetaceae Michx. 



Equisetum arvense L. Field Horsetail. Sandy soil, common. 



Equisetum sylvaticum L. Wood Horsetail. Frequent in bogs, (M. C.). 



Equisetum littorale Kuehl. Shore Horsetail. Shores of the Delaware river at 

 Point Pleasant. 



Equisetum fluviatile L. Swamp Horsetail. Bogs near Quakertown, (M. C.); Nock- 

 amixon, Benjamin Heritage; Penn Valley, Albrecht Jahn. 



Equisetum hyemale L. Scouring Rush. Wet banks along rivers. 



Order 3. LYCOPODIALES. 

 Family i. Lycopodiaceae Michx. 



Lycopodium lucidulum Michx. Shining Club-moss. Buckingham swamp, (M. C). 



Lycopodium inundatum L. Bog Club-moss. Tullytown. 



Lycopodium alopecuroides L. Fox-tail Club-moss. Tullytown. 



Lycopodium obscurum L. Ground Pine. Buckingham swamp, (M. C.) 



Lycopodium clavatum L. Running Pine. Milford, (M. C). 



Lycopodium complanatum L. Trailing Christmas-green. Ridge Valley, Rockhill. 



Family 2. Selaginellaceae Underw. 



Selaginella rupestris (L.) Spring. Rock Selaginella. On rocks at Point Pleasant. 



and Nockamixon. 

 Selaginella apus (L.) Spring. Creeping Selaginella. In moist and grassy places. 



Family 3. Isoetaceae Underw. 



Isoetes cchinospora robusta Engelm. Large Quillwort. Durham, J. A. & H. F. 

 Ruth. 



