118 
13. Pinne equal-sided. 
14. Lamina thinly herbaceous. Seg- 
14. 
ments broad, very oblique. 
15. A distinct tuberculiform aé- 
66 
15. 
rophore at the base of the 
pinne beneath. Sori infra- 
medial. Guadeloupe 
81. D. hydrophila (Fée) C. Chr. 
No distinct aérophore. Sori 
supramedial. Argentina 
82. D. Lorentzii (Hieron.) C. Chr. 
Lamina firmly herbaceous-mem- 
branaceous. Segments not very 
oblique. 
15. 
15. 
Veins 4—6-jugate; rachis and 
surfaces almost quite gla- 
brous. 
16. A single pair of auriculi- 
form pinne 
74. D. tablana (Christ) C. Chr. 
16. 3—4 pairs of auriculi- 
form, often tripartite 
pinne ... 79. D. Lindigii C. Chr. 
Veins 8—10-jugate. 
16. Lamina down wards ab- 
ruptly narrowed, char- 
taceous, sparsely hairy 
beneath on coste and 
costulz only 
80. D. lustrata (Hieron.) C. Chr. 
16. Lamina down wards gra- 
dually narrowed, firmly 
herbaceous or mem- 
branous. 
17. Indusium persistent, 
very setose. Rachis 
glabrous 
109. D. palustris (Mett.) O. Ktze. 
17. Indusium small, de- 
ciduous.Rachis spar- 
sely hairy. 
18. Veins indistinct. 
Lamina firmly 
membranous, 
the underside 
nearly glabrous 
throughout, the 
upperside spar- 
sely pubescent 
110. D. Hieronymusii C. Chr. 
