﻿S5^. CYSTO£*TEIMS, Bevnhawdi. 



Sori roundish, dorsal on a vein or veinlet. Indusium membranaceous, 

 round and cucullate or lanceolate, convex, covering the sorus, hut at length 

 more or less re flexed or fugacious, attached at the inner side of the recep- 

 tacle, opening towards the apex or the margin of the segment. 



Rhizome creeping or erect. Stipes not articulate to the rhizome. Fronds 

 bipinnate or more compoundly divided; veins free, forked or pinnate. Diels, 

 in Engl. & Prantl, Nat. Pfl.Pam., l\ fig. 89, B— C. 



Ferns inhabiting the temperate zones and the alpine regions of the tropics. 



^. Stipes dark-purplebrown. Indusium ligulale, fugacious. (1) C. tristis. 



>K.>i<. Sdpes stramineous. Indusium semiorbicular or transversally oblong. 



(2) C. tenuisecta. 



* (1) C tristis, Mett., Ann. Mus. Bot. L, B., I, 241; Davallia tristis, 

 Rao., Flor. Btz., I, 131; Alsophila tristis, Bl., Hk. Bk., Syn. Fil., 44; C. Chr., 

 Ind. Fil.; Aspidium tristis, BL, Enum., 169. 



Rhizome erect, short, densely clothed with entire, lanceolate, brown scales. 

 Stipes 50 — 90 c.M long, + 7 m.M. thick at the scaly, tuberculato-asperous 

 base, purple-brown, villose towards the rachis. Fronds ovate-lanceolate to 

 deltoid, ± 45 — 90 c.M. long, + 40 — 60 c.M. broad, 3-pinnate, Pinnae ovate 

 to lanceolate, acuminate, short-stalked, the largest to 10 c.M. broad Pin- 

 nulae lanceolate, short-stalked. Ultimate segments sessile, narrowed at the 

 base, 5 — 12^2 m.M. long, to ± 4 m.M. broad, oblong, obtuse, incised to ± 

 ^/j-way down to the costa, more or less decurrent. Texture subcoriaceous ; 

 rachises and costae pilose or fibrillose especially beneath; veins simple or 

 forked. Sori 1 to each lobule, covered by a small, at length reflexed, 

 fugacious, ligulate indusium; receptacle elevated. 



Java. 



(2) C tenuisecta, Melt., Ann. Mus. Bot. L. B. I, 241 ; Alsophila tenui- 

 secta, BL, Moore, Ind., 58; Aspidium tenuisectum, BL, Eimm., 170. 



FiLICES. 17 



