Pinna of mature Frond. 



GLEICHENIA SPELUNOE. 

 Brown. Hooker. Moore. J. Smith. 



{Not of GUILLEMIN.) 

 PLATE XLIX. VOL. VIII. 



Gleichenia — Named in honour of Baron P. F. Von Gleichen, a German 

 botanist. Speluncce — Of a cave. 



A rare, large-growing, splendid species, of compact habit, 

 very distinct, and having pendent but not curving branches. 



A warm greenhouse Fern. 



Native of Port Jackson and New South Wales. 



Fronds glabrous, simple or forked, dichotomous, pinnate, and 

 usually about a foot in length, but varying considerably in 

 size, and in the degree of ramification. Pinnae pinnatifid, 

 about an inch and a quarter in length, opposite below, 

 alternate above, the segments being semiovate, plane, and 

 membranous, not pouched, alternate, and usually from sixteen 

 to twenty pairs. 



Colour of fronds very pale green above, and very silvery or 

 glaucous beneath. 



Veins forked and indistinct. 



This species grows to the height of from four to five feet. 



Sori terminal, situated at the apex of a veinlet, punctiform, 

 and naked. 



For fronds my thanks are due to Mr. J. Smith, Curator of 

 the Royal Gardens, Kew; Mr. Moore, of the Glasncvin Gardens, 



