io8 Our Native Ferns. 



septentrionale : northera; literally, toward the seven-stars (The Great Dipper.) 



serratum : saw-toothed. 



sernilatum : slightly saw-toothed. 



simplex : simple, alluding to the sterile segmeuta. 



sinuata: curved. 



spinulosum: spiny at the apex of the lobes. 



strigosuni: beset with sharp-pointed, appressed hairs. 



Struthioptei-is : Gr. ostrich-fem. 



T. 

 tenera — urn: soft, delicate, 

 teraatum : divided into three main branches, 

 ternifolia: having the leaves in threes. 



thalictroides : having the form of Meadow- Rue (Thaliclram.) 

 Thelypteris: Gr. female fern; an old generic name, 

 thelypteroides : Gr. resembling Thdypteris. 

 tomentosa: covered with tomentum or wool, 

 triangularis : triangular, 

 tricholepis: Gr. having hair-like scales. 

 Trichomanes: a generic name. 



u. 



unitum: united, alluding to the lower veins which anastomose, or possibly to the 

 sori which are somewhat confluent when mature. 



V. 



Virginianum: Virginian, growing in Virginia. 



Virginica : growing in Virginia. 



viride : green, alluding to the stipes. 



viacida: sticky. 



vulgare: common. 



vulgatum : commou, ordinary. 



W. 

 Wrightiana: in honor of Charles Wright. 

 Wrightii : named for Charles Wright. 



