riOlM OF VEIINONT 



PTERIDOPHYTA. FERN PLANTS 



OPHIOGLOSSACEAE. ADDER'S TONGUE FAMILY 



BOTRYCHIUM 



B. lanceolatum, Angstroem. Moist hollows in cool open woods ; rare. 



B. matficariaefolium, Braun. Rich moist woods ; occasional. A reduced 

 form also occurs (B. tenebrosum, A. A. Eaton.) 



B. simplex, Hitchcock. Hilly pastures and open woods ; occasional. 



B. ternatum, Swartz. var. dissectum, Milde. (B. dissectum, Spreng.) Cool 

 loamy soil of open fields ; occasional. 



B. ternatum, Swartz. var. intermedium, D. C. Eaton. (B. obliquum, INIulil. 

 var. intermedium, Underw.) Old pastures and copses ; occasional. 



B. ternatum, Swartz. var. obliquum, Milde. (B. obliquum, Muhl.) Moist 

 gravelly slopes along the base of the mountains ; frequent. 



B. ternatum, Swartz. var. rutaefolium, D. C. Eaton. (B. matricarire, Spreng.) 

 Old fields ; rare. 



B. Virgmianum, Swartz. Rich woods ; common. 



OPHIOGLOSSUM. Adder's Tongue 

 O. vulgatum, L. Muck ; occasional. 



FILICES. FERN FAMILY 



ADIANTUM. Maidenhair 

 A. pedatum, L. Rich moist woods; common. 



ASPIDIUM (DRYOPTERIS) Shield Fern 



A. acrostichoides, Swartz. Christmas Fern. Rocky woods ; common and 

 variable. 



A. acrostichoides, Gray. var. incisum, Ciraj'. Occasional. 



