71 
123 
Jia Soutihy Brazil 0 108. D. tenerrima (Fée) Ros. 
10. Indusium densely setose 109. D. palustris (Mett.) O. Ktze. 
9. Sori supramedial. Rachis pubescent. 
10. Stipe and rachis strong. Basal segments en- 
larged 63. D. opposita var. amphioxypteris (Sod.) C. Chr. 
10. Stipe and rachis very slender. Basal segments 
equae Ha EE e be o ces ale 115. D. recumbens Ros. 
8. Coste beneath densely soft-hairy by long, patent, 
pluricellular hairs and sparsely scaly 
123. D. nitens (Desv.) C. Chr. 
6. Leaf-tissue, especially above, densely and finely puberulous 
by adpressed hairs. 
7. West-Indian species. Indusium small, setose or absent. 
8. Segments 3—5 mm broad, both surfaces densely 
downy. Stipe and rachis slender, not scaly 
116. D. rustica (Fée) C. Chr. 
8. Segments 5—7 mm broad, underside subglabrous. 
Stipe strong, scaly ........ 117. D. Germaniana (Fée) C. Chr. 
7. Continental species. 
8. Indusium persistent. 
9. Indusium black, slightly ciliate. Segments entire; 
‘Veins? —=1l0 fines usa 118. D. melanochlaena C. Chr. 
9. Indusium pale, setose. Segments toothed upwards. 
Veins | 10-1 19399 een 119. D. atrorubens (Mett.) C. Chr. 
8. Indusium absent. 
9. Sori near the margin. Lower pinne auriculiform 
120. D. demerarana (Bak.) C. Chr. 
9. Sori about medial. Lowermost pinne glanduli- 
form: icu s ennt coe dM. bte ir 147. D. Rusbyi C. Chr. 
5. Rachis more or less scaly. Segments often 5—7 mm broad. 
6. Pinnz incised two-thirds of the way down to the costa 
only glabrous 3-395239 1909 4:62:02 908 122. D. Moritziana Urban. 
6. Pinnz incised to a narrow wing to the costa. 
7. Lamina (coste above excepted) glabrous. Basal seg- 
mentstenlargediab. Ssxsem eer Heber vani! 113. D. illicita Christ. 
7. Lamina pubescent, at least on the coste and costule 
beneath. Basal segments not enlarged. 
8. Sori medial or inframedial. 
9. Lamina firmly herbaceous to chartaceous. Coste 
beneath strigose or hairy by patent, rather stiff, 
unicellular hairs. 
10. Leaf-tissue glabrous. Sori exindusiate 147. D. Bradei Christ. 
10. Leaf-tissue finely pubescent. Coste beneath 
patently halinyere c 121. D. dominicensis C. Chr. 
9. Lamina very thin; costzte beneath and margins 
with numerous soft, patent, pluricellular hairs 
123. D. nitens (Desv.) C. Chr. 
8. Sori supramedial. Leaf-tissue finely pubescent above. 
9. Rachis very sparsely scaly. Pinnz distant, the 
lower 2—3 pairs reduced. Veins 7—9. 
120. D. demerarana (Bak.) C. Chr. 
9. Rachis very scaly. Pinnz closer, about 10 pairs 
reduced. Veins 10—15.. 150. D. corazonensis (Sod.) C. Chr. 
