194 Ferns of British India and Ceylon. 
througliout and rather densely muricated ; fronds 18-24 inches long, 
by nearly as broad, with 4-5 pinnate pinnae, and 4-5 that are only 
pinnatifid below the point on each side, the lowest 3 inches apart, 
about 9 inches long, 4 inches broad ; pinnules sessile, 2-3 inches 
long, |-|- inch broad, the edge subentire, the point slightly toothed, 
acuminated, the base rounded on both sides ; texture subcoriaceous; 
both surfaces and rachis naked, the latter muricated in the lower 
part ; veins in groups of 2-3 on a side, the groups usually joining 
half-way across to the edge ] sori often \ inch long. Hook. Syn, Fil. 
p, 245. Bedd. B. I. 332 (Callipteris). 
Ceylon, Matale East and Oodawella, 3,000 feet elevation. 
GENUS XLIV.— HEMIDICTYUM. {Presl.) 
(Hemi^ half; diktyon^ net ; outer portion only of veins reticulated.) 
As in Asplenium, but veins anastomosing obliquely only towards 
the margin of the frond. 
I. Hemidictyum Ceterach. 
{Linn.) Stipes densely tufted, 
1-3 inches long, wiry, ebeneous, 
chaffy ; fronds 4-6 inches long, 
one inch or less broad, Unear 
pinnatifid or scarcely pinnate, 
lobes alternate obtuse f-^ 
inch long, J-| inch broad, with 
a rounded sinus between them ; 
texture subcoriaceous, upper 
surface naked, lower densely 
coated with small reddish brown 
ovate membranous scales; sori 
linear oblique ; involucre rudi- 
mentary. Asplenium Ceterach. 
HEMIDICTYUM CETERACH. [Linn.) ^P' ^S2>^' ^y^' 
Fil. p. 244. Ceterach officinarum 
(Willd.), Bedd F B. 1. t. 
North west India, Kashinir, 3,000-6,000 feet elevation. 
