188 



FERNS : BRITISH AND FOREIGN. 



their apices transversely combined by the receptacle. Bonn 

 linear, in the axis of a linear slightly intramarginal indusium, 



Genusos. — Portion of frond, natural sizej two ditto, enlarged. No. 1. 



the inner free margin of which connives with the inner margin 

 of the opposite indusium, ultimately becoming replicate, with 

 the sporangia of both sori confluent. 



1. O. Japonieum, Kunze. Trichomanes Japonicum, Thunb. 



O. Oapense, Kaulf. En. Fit. t. 1, /. 8. O. lucidum, 

 Cat. Hort. Kew. (1856) (non Spreny.) (non Hook.). — 

 Japan. 



2. O. auratum, Kaulf. Lomaria decomposita, B. Bon. Pteris 



ohrysocarpa, Hooh. et Grev. Ic. Fil. t. 107. — East 

 Indies and Malayan Archipelago. 



96. PTERIS, Linn, (in part). 



Vernation fasciculate and erect or decumbent, or uniserial and 

 sarmentose. Fronds pinnate, bi-tri-quadripinnate, rarely simple, 

 from a few inches to six or more feet high ; the nltimate pinnse 

 entire, sinuose-lobed or pinnatifid. Veins forked ; sterile venules 

 free, the apices of the fertile transversely combined by the 



