(9. Aspidium.) 



acrostichoides, var. incisum, Gr. (Polystichum, Roth.) 

 Moist rocky woods; Rattlesnake Run; Giant's Cave. 

 Not common. July. 



10. Onoclea, L. 

 sensibilis, L. 



Moist open woods and meadows. Frequent. July. 



Sub-Order 2.— OSMUNDINE^E. 



11. OSMUNDA, L. 



regalis, L., var. spectabilis, Gr. 



Moist meadows, &c. Frequent. July. 

 Claytoniana, L. 



Low grounds. Frequent. July, 

 cinnamomea, L. (Cinnamon Fern.) 



Swampy grounds. Frequent. July. 



Sub-Ori>er 3.-OPHIOGLOSSEJE. 



12. Botrychium, Swartz. 

 lunarioides, Swartz. (Moonwort.) 



• Low sandy soil; Brandy wine, &c. Frequent. Aug. 



lunarioides, var. dissectum, Gray. 



•uith the last, but not so common. July. 

 Virginicum, Swartz. 

 u Rich sandy woods. Frequent. July. 



13. Ophioglossum, L. 



\* vulgatum, L. (Adder's Tongue.) 



Rich wet woods; J. Tatnall's. Frequent. June. 



Order 114.— LYCOPODIACEyE. 137. 



> 1. Lycopodium, L. 



lucidulum, Miclix. 



Moist cold woods. Frequent. July, 

 alopecuroides, L. 



Swamps; Ogletown; Thompson's. Not common. 

 July. 

 ^ dendroideum, Miclix. (Ground Pine.) 



Moist clay woods; "Silk farm," &c. Frequent. 

 * July. 



* 



