2 48 FERNS : BRITISH AND FOREIGN. 
deltoid, 6-18 inches high ; pinnae distant, pinnate below, pin- 
natifid decurrent above; pinnules lanceolate, pinnatifid or 
sinuose lobed. Veins uniform, reticulated ; areoles transverse 
oblong ; marginal veinlets free, exserted beyond the margin, 
bearing a globose pediculate sorus. Indusium calyciform, 
spreading, entire. 
1 T. Moorei, J. Sm. ; Lowe's Ferns, 8, t. 37. Deparia 
Moorei, Hook. Journ. Bot. and Kew Gard. Misc. v. 4, 
t. 3 ; Hook. Fit. Exot. t. 28. Cionidium Moorei, 
Moore, Ind. — New Caledonia. 
** Veins free. 
f Sori indusiate. 
§ 3. Oreopterice. Sori punctiform. Indusium orbicular or 
reniform, plane or cucullate, rarely calyciform. 
a. Indusium orbicular or reniform. 
74. POLYSTICHUM, Both (in part) ; Scliott; Presl. 
Vernation fasciculate and erect, or uniserial and subsar- 
mentose. Fronds pinnate, bi-tripinnate, or decompound ; pinnae 
Genus 74.— Portion of mature frond, under side. No. I. 
and pinnules auriculated and lobed, dentate, rigid, spinulose, 
mucronate. Veins simply or pinnately forked , venules free, the 
lower exterior branch or more (of each fascicle) soriferous on, or 
