AN ENUMEKATION OF CULTIVATED FEKNS. 265 



Receptacles medial. Sori oblong, linear, simple or forked, 

 naked, often confluent. 



Genus 149. Portion of fertile frond, under side. No. 1. 



* Fronds coriaceous, opaque. (Eutodea.) 



1. T. Africana, Willd. ; Schk. Fil. t. 147; Hook. Gen. Fil, 



t. 46 J5, /. 1 ; Hook. fil. Fl. Tasm. t. 168 ; Lowe's 

 Ferns, 8, t. 67. Acrostichum barbarum, Linn. Todea 

 barbara, Moore's Synop. T. rivularis, Sieb. ; Kunze, 

 Anal. t. 4. T. Australasica, A. Cunn. South Africa, 

 Australia, Tasmania. 



** Fronds membraneous. (Leptopteris.) 



2. T. hymenophylloides, Rich. Voy. d* Astrolabe, 1. 16 ; Hook. 



Gen. Fil, t. 46 13, f. 7 ; Hook. Gard. Ferns, t. 54. 

 Leptopteris hymenophylloides, Presl. Todea pellucida, 

 Carm. ; Hook. Ic. PI. t. 8. New Zealand. 



3. T. superba, Colenso. Leptopteris superba, Hook. Ic. PI- 



t. 910. New Zealand. 



4. T. Fraseri, Hook, et Grev. Ic. Fil. t. 101. Leptopteris 



Fraseri, Presl. New Holland. 



2. Exannulatce. 

 Sporangia coriaceous, opaque, destitute of a ring. ' 



^-ORI>EJI% MARATTIACE^l, Kaadf. 

 Sporangia dorsal, exannulate, opaque, horny, generally sessile, 

 distinct, or connate and forming synangia, opening by a pore or 

 longitudinal slit. 



