AN -ENUMEEATIGJf OT CULTIVATED FEENS. 



1C7 



01 the pedicels of the sporangia concrete, forming thickened 

 receptacles. Sori round, confluent. 



Genus 82.— Portions of sterile and fertile pinna, natural size, and ditto 

 fertile, enlarged. No. 1. 



1. S. Germanica, Willd. ; Lowe's Ferns, 2, t. 63 ; Eook. Gen. 



Fil. t. 69. Onoolea StruthioiJteris, Sw, i 8clik. FU. 

 t. 105. — Germany, 



2. S. PeimsyTvaniGa, Willd. — ^Iforth America. 



7. PhecjopUr'us. Sori pnnctiform, rarely oblong, naJced, 

 or seated in the axis of reflexed indusiform dents. 



8S. AMPHIDESMITJM, Schott. 



Vematwn fasciculate, decumbent and criniferous. Fronds 

 pinnate, 4-6 feet long, smooth ; pinnse linear-lanceolate, adhe.-- 

 rent. Veins simple or rarely forked, parallel. Receptacles 

 punctiform. Sori medial, round, criniferous, ii-regular, often 

 more than one on the same vein. 



