J48 UEMIDICTYUM MARGINATUM. 



Fronds broadly lanceolate, pinnate, pinnae twelve to fourteen 

 inches long, and three to five inches wide, widest at the base, 

 narrowing to an acute apex; around the margin is a membranous 

 edge, from which, no doubt, it takes its name of marginatum. 

 Shortly petiolate. 



Veins forked, venules parallel till near the margin, where 

 anastomosing and reticulated. 



Fronds semi-transparent. Pinnse opposite or sub-opposite. 



Rhizoma erect. 



Stipes and rachis green, except near the base, where brownish. 



Base scaly, elsewhere destitute of scales. 



Scales reddish. 



Sori linear, unilateral, and very conspicuous, situated on the 

 superior side of the parallel veins. 



Length of frond from six to fourteen feet, the lower two 

 feet naked; colour of frond a pale lively green. 



For a plant and fronds of this species my obligations are due 

 to M. Schott, Director of the Imperial Gardens of Schonbriinn, 

 near Vienna. 



This species may be procured of Messrs. Veitch, Jun., of 

 Chelsea. 



The illustration is from a plant in my own collection. 



