^XX COMPENDinjt. 



terminal, always distant. Fronds naked. Spores 

 3-lobato-tetraliedral. 



GENUS 60a. PHEGOPTERIS. Veins anastomosing as 

 in Nephrodium (Dryopteris §), or free but then 

 the spores S-latepal. 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 sii^ple or divided, but not as in genus 61. 

 Sori ± round. 



GENUS 61. DIPTERIS. Veins anastomosing copiously 

 and irregularly. Fronds flabellato-dichotomous. 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 

 tetto -ftad the margin, free i 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 while- 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 

 ma:rgin. Gosta distinct; veins invisible. 



