﻿VI. POLYPODIACEAE. lot 



§ 7. PHE60PTERIDEAE. 



1. Fronds flabellato-dichotomous. Sori round or punctiform. Veins anastomosing 



copiously. No. 61. Dipteris. 



1.1. Fronds variously divided, but not flabellato-dichotomous. Sori round or 



oblong, if terminal on the veins sometimes running into a submarginal line. 



2. Veins free. 



3. Sori terminal on the veins. 



4E. Fertile segments much contracted. Sori at length covering 

 + the vv^hole under surface of the segments. 



(No. 80. Polyhofrya). 

 1.1. Fertile segments not contracted. 

 5. Spores bilateral. 



No. 60a. Phegoptcriii, §§ Euphegopferis & 



Leplogramme. 

 S.S. Spores not bilateral. 



€. Fronds hairy, fihrillose or scaly, at utmost 3-pin- 

 natifid. Sori not rarely contiguous and confluent 

 into a submarginal line, often more or less covered 

 by the + recurved, hardly modified margin of 

 the frond. Spores globoso-tetrahedral. 



No. 58. Motholaena. 



e.e. Fronds naked, at least 3-pinnate. Sori distant, 



never confluent, nor covered by the alvpays flattened 



margin of the frond. Spores 3-lobato-tetrahedral. 



No. !59. Monaclioiioruiii. 



3.3. Sori medial or lower on the veins. 



No. 60a. PhegopteriiS, §§ Euphegopferis ^ Leptogramme. 

 2.2. Veins anastomosing. 



jfc. Lower veins of contiguous groups uniting as in Nephrodium. 

 No. 60a. Pbegopteris, §§ Goniopteris, Slegnngramme ^ 



Meniscium. 

 >|c.)|<. Veins anastomosing more or less copiously and irregularly. 



No. 60/>. UictyopterijS, § Arcypferis. 



