264 



FERNS : BRITISH AND FOREIGN. 



* Fertile frond wholly contracted. (Osmundastrum.) 



1. O. cinnamomea, Linn.; ScJik. Fil. 



t. 146 ; Hook. Gard. Ferns, t. 45; 

 Lowe's Ferns, 8, 1. 1. North and 

 South America, East Indies. 



** Lateral pinnce of fertile frond con- 

 tracted. (Plenasium.) 



2. O. Claytoniana, Linn. ; Lowe's Ferns, 



8, t. 2. O. interrupta, Michx. ; 

 ScJik.Fil. 1. 144. North America. 



*** Terminal pinnce of 



fertile frond contracted. 



(Euosmunda.) 



3. O. regalis, Linn. (Plum. 

 Fil.t.B,fA)' t Schk. 

 Fil. t. 145 ; Hook. 

 Gen. Fil. t. 46 A ; 

 Eng. Bot. t. 209 ; 

 Lindl. and Moore's 

 Brit. Ferns, t. 50 ; 

 Hook. Brit. Ferns, 

 t. 45 ; Sowerby's 

 Ferns, t. 44 ; var. 

 cristatus, Moore, 

 in Gard. Chron. 

 (1863). North 

 Temperate Zone, 

 Brazil. 



Genus 148. Pinnu'e of barren frond, and 

 fertile spike, natural size. No. 3. 



4. O. spectabilis, Willd. 0. regalis, var. (3, Linn. North 



America. 



5. O. gracilis, Link. North America. 



149. TODEA, Willd., 



Vernation fasciculate, erect, sub-arboreous. Fronds bipinna- 

 tifid, 26 feet high; pinna3 coriaceous or membranaceous; 

 fertile frond sub-contracted. Veins forked; venules free. 



