﻿XXX COMPENDIUM. 



terminal, always distant. Fronds naked. Spores 

 3-lobato-tetrahedral. 



GENUS 60a. PHEGOPTERIS. Veins anastomosing as 

 in Nephrodium (Dryopteris §), or free but then 

 the spores 2-laleral. Fronds naked or hairy. 

 Sori round or oblong, rarely linear-oblong, medial 

 or terminal. 



GENUS 606. DICTYOPTERIS. Veins anastomosing 

 more or less copiously, but not as in genus 60a. 

 Fronds simple or divided, but not as in genus 61. 

 Sori + round. 



GENUS 61. DIPTERIS. Veins anastomosing copiously 

 and irregularly. Fronds (labellato-dicholomous. Sori 

 round or punctiform. 



Tribe VIII. Gymnogrammeae. Sori linear or linear-oblong, 

 more than 2 X as long as broad, several on each side 

 of the costae, mostly oblique, rarely subparallel to the 

 latter and the margin, free or reticulate. Fronds not 

 articulate to the rhizome. 



GENUS 62. CONIOGRAMME. Veins free quite to the 

 margin. Under surface of the fronds not powdery. 



GENUS 63. CEROPTERIS. Veins free quite to the 

 margin. Under surface of the fronds white- or 

 yellow-powdery. 



GENUS 64 ANTROPHYUM. Veins anastomosing copi- 

 ously. Sori longitudinal, running along the veins, 

 irregular. Costa wanting, or present in the lower 

 half of the fronds only. 



GENUS 65. LOXOGRAMME Veins anastomosing copi- 

 ously. Sori parallel, ± oblique to the cosla and 

 margin. Costa distinct; veins invisible. 



