132 BOTANY OF LA SALLE COUNTY. 



Pellae a gracilis. Small, gra.y G., 2 to 4 in. 

 Asplenium ebe neum. Pruit dots long-, straight or 



curved. 



A. ang-ustifo Hum. 

 A. thelypteroi des. 

 A. Filix-foe mina. 



Camptosor us. rhizophyl lus. Walking- Fern. 

 Pheg'op teris polypodioi des. Fruit dots small, 



round. 

 P. hexag-onop tera. Fronds triangular, wider than 



long-. 

 Aspidium Thelyp teris. Fruit dots opening- by 



marg-in. 



A. spinulo sum. Leaves spiny-toothed. 

 A. Goldia num. Frond broad-ovate. 

 A. marg-inale. Fruit dots close to marg-in. 

 A. acrostichoi des. Fruit on upper end of frond. 



A. lonchit is. Frond long-, narrow, rig-id. 

 Cystop teris bulbif era. Fronds narrow, long-- 

 pointed. 



C. frag- ilis. Fronds shorter. 



Onocle a sensib ilis. Fruit on a separate frond. 



O. Struthiop teris. Struthiop teris German ica 



5th Ed. 

 Wood sia liven sis. Small, tufted plants. Rocky 



places. 

 W. obtusa. 

 Osmun da reg-al is. The larg-est of our ferns. Very 



rare. 



O. claytonia na. Common. 

 O. cinnanom ea. Woollv. 



Order 132. OPHIOGLOSSA CEAE. ' 

 Botrych ium Virg-inia num. Moonwort. Damp 

 Woods. 



B. lanceola turn. Damp wood. 



