320 37. ADIANTUM. 



Key to the malayan grmtps. 

 (§ i. Eu-adiantum). 



a. Fronds simple. § 1- a. Renifoi'iuiae. 



«.«. Fronds divided. 



h. Fronds forked, the primai-y branches pinnately branched on the upper 

 (inner) side only. § 1- e. Pedatae. 



h.h. Fronds varying from simply to more copiously pinnate. 



c. Sori long, linear, continuous or interrupted. Leaflets dimidiate 

 or unequal-sided. § 1- b. Oligosoriae. 



C.C. Sori short, transversally oblong or obreniform. 



d. Leaflets dimidiate or unequal-sided. § 1. c. Polysoriae. 

 d.d. Leaflets obliquely cuneato-flabellate, sometimes tending tow- 

 ards orbicular, or trapeziform- or rhomboidal-dimidiate. 



§ 1. d. Ouneatae. 



§ 1. EU-ADIANTUM. a. Reniformiae. 



(1) A. Paristaii, Jifc., Hk. Bk., Syn. Fil., 114; Hk., Spec. Fil., Ill, 

 tab. CSLW, A; Fil. Exot., tab. LI; Bedd., Ferns Br.L, I. tab. XVI. 



Stipes tufted, slender, naked, dark-brown, polished, '/^ — I'/j c.M. long. 

 Fronds 1^2 */j c.M. each way, suborbicular, slightly undulate, cuneate at 

 the base. Textm-e papyraceo-herbaceous ; veins radiant, not prominent. Sori 

 few, placed in the crenations of the fronds. 



Malacca; Buinnah. 



$ 1. EU-ADIANTUM. b. Oligoisoriae. 



:}:. Frotuts simply pinnate. Leaflets {pinnae) sessile or subsessile, rather opposite. 



(2) A. macrophyllum. 



:!(c.*. fronds once or more times pinnate. Leaflets {pinnae or pinnulae) du' 



tinctly stalked, rather alternate. (5) A. platyphyllum. 



