120 
68 
16. Leaf-tissue of both sides 
glabrous. Indusium gla- 
brous 88. D. rioverdensis C. Chr. 
16. Leaf-tissue of both sides 
finely pubescent. Indu- 
sium setose 
86. D. rivulariformis Ros. 
9. Rachis densely pulverulent by very short hairs, 
long hairs being absent or few among the short ones. 
10. Lamina towards base gradually and shortly 
attenuate. West-Indian and Andine species. 
11. Indusium persistent, densely setose. Under- 
side densely glandular. Jamaica 
89. D. Nockiana (Jenm.) C. Chr. 
11. Indusium none or small. Underside not 
or sparsely glandular. 
12. 
12. 
Leaf throughout hairy by rather rigid 
hairs. 
13. Veins above without solitary, long 
CED: 2c ree 90. D. muzensis Hieron. 
13. Veins above with solitary, long 
CCID JS oA eee 91. D. columbiana C. Chr. 
Leaf glabrous or very inconspicuously 
hairy between the veins. 
13. Hairs of coste and veins minute; 
underside slightly glandulose. Sori 
supramedial with a glandulose in- 
dusium. Cuba..... 92. D. piedrensis C. Chr. 
13. Hairs of cost and veins rather long, 
rigid; underside eglandulose. Sori 
medial, exindusiate. Andes 
93. D. boqueronensis Hieron. 
10. Lamina towards base abruptly attenuate. 
TM vAmdinel specreso-.- 94. D. lepidula Hieron. 
II BraZziliamSspeclesp- 939: 95. D. Lindmani C. Chr. 
8. Lamina coriaceous or rigidly papyraceous. 
9. Stipe and rachis glossy, atropurpureous. 
10. Coste beneath glabrous. 96. D. laevigata (Mett.) C. Chr. 
10. Coste beneath strigose.... 97. D. Crossii (Bak.) C. Chr. 
9. Stipe and rachis stramineous or greyish. 
10. Pinnz scarcely 2'/2 cm long, often subentire; 
veins 2—4-jugate. Stipe much longer than 
the lamina eir er rS 99. D. Millei n. sp. 
10. Pinne 4—10 cm long, deeply pinnatifid; veins 
4—10-jugate. Stipe as a rule shorter than the 
lamina. 
11. 
He 
Rachis densely pulverulent by very short 
hairs, without long hairs.. 92. D. piedrensis C. Chr. 
Rachis subglabrous or more or less hairy 
by longer hairs. 
12. Lamina with a rounded base, the lo- 
wer 1—2 pairs of pinne being auri- 
culiform and rather closely placed. 
