8 ONOCLEA SENSIBILIS. 



Native of North America, Florida, and the variety O. ohtusiloha 

 in Pennsylvania. 



"Was known in England as early as 1699, and at Kew in 

 1793. 



Barren and fertile fronds different. 



Barren fronds triangular in form, glabrous, pinnate; the pinnae 

 oblong-lanceolate in form, sinuately pinnatifid, the superior ones 

 being decurrent at the base. Segments oblong-obtuse; margin 

 entire. 



Fertile frond contracted, not quite as long as the barren frond, 

 bip innate; pinnules rugose; sessile consisting of from twelve to 

 twenty on each pinna. The contractions of the segments form 

 a unilateral raceme, oblong, ovate, and bacciform, concealing the 

 sori. 



Fronds lateral, adherent to a creeping rhizoma. Length from 

 one to two feet; colour pale green. 



Veins of fertile frond simple, direct, and free; in the barren 

 frond reticulated. 



For plants of this species I am indebted to Sir Oswald Mosley, 

 Bart., of Rolleston Hall. 



It may be procured of Messrs. E-ollisson, of Tooting; Sim, 

 of Foot's Cray; Kennedy, of Covent Garden; Masters, of Can- 

 terbury; Yeitch, Jun., of Chelsea; A. Henderson, of Pine-apple 

 Place; Cutbush, of Highgate; Young, of Taunton; Bass and 

 Brown, Sudbury; Stansfield, of Todmorden; and Cooling, of 

 Derby. 



The illustrations are barren and fertile fronds, from a plant 

 in my own collection. 



