﻿29 

 3- ^?lLSOI*JH1L^^, n. Bfown. 



Sori globose, dorsal on a vein or veinlet or in the forking of a vein ; receptacle 

 elevated, rarely punctiform. Indusium wanting or spurious and minute and 

 then consisting of a semiorhicular, inferior, lateral scale placed at the inner 

 side or of a circular, entire or lobed scale or a vi^horl of fibres with the 

 receptacle in the centre. 



Caudex arborescent. Fronds mostly large, divided ; veins simple or forked, 

 free or very rarely joining towards the margin. Hk. Bk., Syn. PH., tab. I, 

 fig. 6; Diels, in Engl. & Prantl, Nat. Pfl.Fam., P, fig. 83. 



Tropical, and extra-tropical in the southern hemisphere. 



«. Pinnulae entire, crenafe or lobed to %-way down to the costa. (1) A. dubia. 

 «.€». Pinnulae lobed or pinnati/id + ^l^—^j^-way down to the costa. 

 h. Main rachis naked, but sometimes rough. 



$. Sori divaricating, the higher ones nearer the main veins than the 

 lower ones, so as to form a /y. (2) A. glabra. 



§.§. Sori not divaricating, medial. (3) A. Ridleyi. 



fe.fe. Main rachis more or less scaly, hairy or to'mentose. 

 c. Texture + herbaceous. 



■^. Main rachis very densely scaly and long-hairy. (4) A. Burbidgei. 

 ^.^. Main rachis not densely scaly or hairy. 



•i>. Main rachis short-hairy above, otherwise naked or paleaceous. 



(5) A. squamulata. 

 •{••f . Main rachis moderately long-hairy above, the hairs articu- 

 late, mixed with long, linear scales. (6) A. Margarethae. 

 c.c. Texture chartaceous to coriaceous. 



d. Stipes bearing 3^5 long, branched spines at the base. 



(7) A. ramispina. 

 d.d. Stipes without branched spines at the base. 



e. Lobes entire. Capsules intermixed with fine hairs. 



(8) A. obscura. 



e.e. Lobes crenate. Capsules intermixed with paraphyses, 



which are clavate at the apex. (9) A, commutata. 



a.a.a. Pinnulae deeply pinnatifid, often nearly to the costa, sometimes pinnate at 



the base. 



§.. Stipes unarmed, but sometimes scabrous with minute, more or less acute warts. 



