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 i foot 
long (often much more), 6-8 inches broad, occasionally simple and 
entire, genei-ally pinnate with 2-6 opposite pairs of lateral pinnse, the 
lower ones 4-8 inches long, 1J-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 i-|-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. 
GENUS XLV.— ALLANTODIA. {Wall) 
{Allantos^ a sausage ; form of indusium.) 
Sori dorsal, Hnear-oblong, attached to the primary veins ; indu- 
sium the same shape as the sorus and quite enclosing it, bursting in 
an irregular line down to 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.) 
I. Allantodia javanica. {Bl. under Asplenium.) Fronds 
fJ°96 
