﻿3. ALSOPHILA. 31 



.'. Son medial. (23) A. batjanensis. 



!.!. Sori + coslular 



if. Lobes obscurely crenato-serraie. 



(24) A. melanopus. 

 ^.>|<. Lobes distinctly serrate. (25) A. ornata. 



3'.3'. Main rachis conspicuously muricate. 



•J>. Spurious indusium wanting. (26) A. crinita. 



•$•••{•. Spurious indusium present, consisting of a minute, inferior, 



orbicular, entire or lobed scale or a ivorl of fibres, with the 



receptacle in the centre. Under surface glaucous. (27) A. glauca. 



a.a.a.a. Pinnulae pinnate; the segments free or sometimes slightly joined at 



the base. 



h. Texture membranaceous to papyraceous. 

 c. Pinnae under i5 c.M. broad. 



d. Main rachis rough and sirigulose. Pinnae + 8 c.M. broad. 

 Spirious indusium ivanting. (28) A. Christii. 



d.d. Main rachis muricate and furfuraceo-tomentose. Pinnae + 

 iO — d2 c.M. broad. Spurious indusium present. 



(29) A. truncata. 

 c.c. Pinnae i5 — 50 c.M. broad. 



>|c. Tertiary segments + 2^j^ m..M. broad, crenulate at the apex. 



(30) A. celebica. 

 if., if.. Tertiary segments + 5 m.M. broad, distinctly crenate. 



(31) A. polyphlebia. 

 h.h. Texture + coriaceous. 

 c'. Main rachis prickly. 



d'. Costae densely paleaceous beneath with ragged, tomentose scales. 



(32) A. tomentosa. 

 d'.d'. Costae naked or not densely scaly beneath. (33) A. extensa. 

 c'.c'. Main rachis not prickly. 



>tc. Pinnulae + i — f'/j c.M. broad, the costae densely scaly. 



(34) A. lurida. 

 if. if. Pinnulae + 4 c.M. broad, the costae fibrillose. 



(35) A. mindanensis. 



* (1) A. dullia, Bedd., Journ. of Bot., XXVI, 1, tab. CCLXXIX, A; 



A. Teysmanniana, Rac, MS. in Herb. Bog. 



Fronds large, 2-pinnate; rachises brown, naked and glossy beneath, to- 



