124 72 
4. Basal sori oblong or linear, the upper ones roundish, oblong 
or linear. 
5. Lamina gradually narrowed downwards. 
6. Basal veins running to the sinus. Reduced pinnz few. 
Veins 6—7-jugate.............. 124. D. diplazioides (Desv.) Urban. 
6. Basal veins running to the margin above sinus. Reduced 
pinnz several. Veins 10—15-jugate. 
7. Veins immersed, 10—12-jugate. Leaf throughout shortly 
pubescent, 50—60 cm long. Sori medial, oblong- 
hear 456. cc EELCIIET D 125. D. consimilis (Fée) C. Chr. 
7. Veins raised above, 10—15-jugate. Leaf sparsely pubes- 
cent by longer hairs, 80—100 cm long. Sori supra- 
medial, roundish or oblong... 126. D. heteroclita (Desv.) C. Chr. 
5. Lamina downwards abruptly narrowed. 
6. Lamina finely puberulous throughout. Sori exindusiate 
127. D. atrovirens C. Chr. 
6. Lamina glabrous between the veins. Indusium small. 
128. D. leplogrammoides Ros. 
2. Rhizome wide-creeping with distant stipites. Veins not rarely furcate. 
3. Lamina coriaceous. Reduced pinnze none or 1—2-jugate. 
4. Sporangia setose. Jamaica .............. 129. D. firma (Jenm.) C. Chr. 
4. Sporangia glabrous. Andes........... 130. D. Pavoniana (Kl.) C. Chr. 
3. Lamina herbaceous or membranous. Sporangia glabrous. 
4. Lower 3—8 pairs of pinne reduced. 
5. Rachis and coste beneath sparsely scaly. Andine species 
131. D. Rosenstockii C. Chr. 
5. Rachis and coste without scales. South-Brazilian species. 
6. Leaf-tissue glabrous. 
7. Pinne up to 8 cm long, scarcely narrowed towards 
their. basen thy: METER e een itus 132. D. Santa Catharinae Ros. 
7. Pinne up to 18cm long; narrowed gradually towards 
thelnbdse--- 39 sees aes 133. D. Jürgensii (Ros.) C. Chr. 
6. Leaf-tissue beneath pubescent. 
7. Lamina abruptly narrowed downwards.. 134. D. Mosenii C. Chr. 
7. Lamina gradually narrowed downwards. 
8. Pinnz deltoideo-oblong. Veins often furcate 
135. D. rivularioides (Fée) C. Chr. 
8. Pinnz linear-lanceolate. Veins simple .. 136. D. scariosa Ros. 
4. Lower pinnz not reduced at least not auriculiform. Most 
veins furcate. Lower segments of larger pinne quite free. 
Veins ‘simples. c Ert. et cs 137. D. tremula Christ. 
1. Veins 12—25-jugate, generally close. 
2. Lamina bipinnatifid; no segments free. 
3. Sporangia glabrous. 
4. Argentine and South-Brazilian species. 
5. Aérophore none. Rhizome creeping. Coste more or less 
pilose. 
6. Veins 14—16-jugate, pellucid. Lamina thinly herbace- 
ous to UTC REESE 138. D. siambonensis (Hieron.) C. Chr. 
6. Veins 16—18-jugate. Lamina firm 
139. D. achalensis (Hieron.) C. Chr. 
5. Aérophore present. Rhizome erect. Lamina with some few 
scaltered long hairs or perfectly glabrous. 
