AX ENUMERATION OP CULTIVATED PERNS. 



105 



feet long. Feins reticulated, or the exterior venules free; the 

 costal anastomoses transverse, elongated, and sporangiferous. 

 'Receptacles elongated, medial, constituting a costal row of 

 oblong, linear, contiguous sori. Sporangia immersed. Indu- 

 sium vaulted, revolute. 



1. W. radicans, Sm. ; Schk. Fil. t. 112; Booh. Gen.Fil. t. 17; 



Lowe's Ferns, 4, t. 44. Blechnum radicans, Linn. 

 Woodwardia stans, Sw. ft confluens. Woodwardia 

 confluens, Hort. — South Europe, North India, 

 Madeira, California. 



2. W. orientalis, Sw. W. 



Fortunei, Hort. Angl. 

 — Japan and China. 



3. W. Japoniea, Sw. Blech- 



num Japonicum, 



Linn. ; Thunb. Ft, 

 Jap. t. 35. — Japan 

 and China. 



105. ANCHISTEA, Fresl. 



Vernation uniserial ; sar- 

 mentum hypogEeous. Fronds 

 bipinnatifid, 1-2 feet high. 

 Veins flabellatcly forked, free 

 exteriorly ; the lower venules 

 transversely anastomosing and 

 sporangiferous. Receptacles 

 elongated, medial. Sori oblong, 

 contiguous, in a cpntinuous 

 costal row. Indusium linear, 

 plane 



Virginica, Presl. 

 Blechnum Virgini- 

 cum, Linn. "Wood- 

 wardiaVirginica, Sm.; 

 Metten. Fil. Hort. 

 Lips.t.6,f.l,2; Lowe's 

 Ferns, 4, t. 45. — 

 North America. T. 



1. A. 



Genus 105.— Fertile pinna, under sidft. 

 "No. i 



