VI. POLYPODIACBAE. 131 



§ 7. PHEGOPTERIDEAE. 



nds flabellato-dichotomous. Sori round or punctiform. Veins anastomosing 

 ously. No. 61. Dipteris. 



ods variously divided, but not flabellato-dichotomous. Sori round oi 

 ng, if terminal on the vein^sometimes running into a submarginal line. 

 Veins free, &^(Stfjr xrL^ ...^^r^ 4^ '^>^«-l.*,^,j2_, -t^o.^ 

 3. Sori terminal on the veins. 



4. Fertile segments much contracted. Sori at length covering 

 ± the whole under surface of the .segments. 



(No. 80. Volyhotvyn). 

 A.A. Fertile segments not contracted, i^"- f9''-'ry^ci^'>'^ 

 5. Spores bilateral. 



No. 60a. Pheg-opteriii, §§ Euphegopleris & 



Leptogramme. 

 5.5. Spores not bilateral. 



e. Fronds hairy, fibrillose or scaly, at/utmost 5-pin- 

 natifid. Sori not rarely . contiguous and confluent 

 into a submarginal line, often more or less covered 

 by the + recurved, hardly modified margin ol 

 the frond. Spores globoso-tetrahedral. 



No. 58. Motholaena. 



e.6. Fronds naked, at least 3-pinnate. Sori distant, 



never confluent, nor covered by the always flattened 



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



No. S9. Monachosoruni. 



3.3. Sori medial or lower on the veins. 



No. 60a. Pbegopteris, §§ Euphegopleris Sf Leptogramme. 

 Veins anastoinosing.^«:r^c.=«., co.aX'- eiJ^ .*^a,^^A^c^^ ■ 

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

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



Meniscium. 

 ;tc.>|c. Veins anastomosing more or less copiously and irregularly. 



No. 606. Uictyopteris, § Arcypteris. 



