﻿320 37. ADIANTUM. 



Key to the malayan groups. 

 (§ i. Eu-adiantum). 



a. Fronds simple. § 1- a. Rciiiforiuiae. 



a.a. Fronds divided. 



h. Fronds forked, the primary branches pinnately branched on the upper 

 (inner) side only. § 1- e. Peclatae. 



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



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

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



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



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

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

 ards orbicular, or trapeziform- or rhomboidal- dimidiate. 

 I 



§ 1. d. CJuneaiae. 



§ 1. EU ADIANTUM. a. Reniformiae. 



(1) A. Parisliii, Jlfc., Hk. Bk., Syn. Fil., 114; Hk., Spec. Pil., Ill, 

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



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

 Fronds 1 — 'i\ c.M. each way^ suborbicular, slightly undulate, cuneate at 

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

 few, placed in the crenations of the fronds. 



Malacca; Bitrmah. 



$ 1. EU'ADIANTUM. b. Oligosoriae. 



5|<» Fronds simply pinnate. Leaflets (pinnae) sessile or subsessile, rather opposite. 



(2) A. macrophyllum. 

 >|f.>fc. Fronds once or more times pinnate. Leaflets {^pinnae or pinnulae) dis- 

 tinctly stalked, rather alternate. (3) A. platyphyllum. 



