Ferns of British India and Ceylon. 



195 



(Also in Afghanistan, Western Asia, Europe, and North-west 

 Africa.) 



2. Hemidictyum Finlaysonianum. {Hook.) Stipes 6-9 inches 

 long, green, subcompressed, nearly naked ; fronds usually 1 foot 

 long (often much more), 6-8 inches broad, occasionally simple and 

 entire, generally pinnate with 2-6 opposite pairs of lateral pinnaa, the 

 lower ones 4-8 inches long, i|-2 inches broad, the apex very 

 acuminate, the base narrowed into a 

 distinct petiole, the margin entire or 

 irregularly lobed ; texture leathery ; 

 veins subflabellate, very oblique, anas- 

 tomosing slightly towards the margin, 

 sometimes bounded by an irregular 

 intramarginal line; sori often \\-2 

 inches long, rooting buds are often 

 produced from the midribs of the 

 pinnae near the apex. Hook. Syn. Fil. 

 245. Bedd. F. B. I. t. 72. . 



North and East Bengal, with 

 Assam, up to 3,000 feet, very com- 

 mon, especially in Khasya ; Malay hemidictyum finlaysonianum. 

 Peninsula. ^ Hoo,z) - 



GENUS XLV.— ALLANTODIA. {Wall) 



{Allaulos, a sausage ; form of indusium.) 



Sori dorsal, linear-oblong, attached to the primary veins ; indu- 

 sium the same shape as the sorus and quite enclosing it, bursting in 

 an irregular line down t£ the centre, or rarely asplenioid ; veins 

 anastomosing and forming several elongated areoles, smaller towards 

 the margin, with free marginal clavate veinlets; fronds pinnate, 

 very membranaceous, (the character of the indusium is not to be 

 relied on, similar sausage-shaped indusia being found in species 

 of true Asplenium and Diplazium.) 



1. Allantodia javanica. {Bl. under Asplenium.) Fronds 



N°96 



