67 119 
18. Veins distinct. 
Lamina firmly 
membranous,the 
underside spar- 
sely pubescent, 
the upperside 
subglabrous 
83. D. argentina (Hieron.) C. Chr. 
12. Hairs of rachis beneath persistent, often 
many and sometimes pluricellular. 
13. Indusium none or very small, rare- 
ly seen. 
14. Rhizome erect or obliquely erect. 
15. Hairs of rachis long, patent, 
often pluricellular. 
16. Stipe more or less hairy, 
not clothed with a dense 
mass of woolly hairs. 
17. Lamina herbaceous; 
basal segments with- 
out: auricles 
84. D. oligocarpa (H. B. W.) O. Ktze. 
17. Laminathickly mem- 
branous; basal seg- 
ments with an in- 
terne auricle 
170. D. multiformis n. sp. 
16. Stipe and lower part of 
rachis very densely hairy 
by woolly, patent, long 
hairs). 2) 166) 0D) lanipes (G. Chr: 
15. Hairs of rachis short, most- 
ly adpressed, unicellular. 
Andine species. 
16. Veins 7—8 to a side in 
the slightly oblique seg- 
ments.. 86. D. rivulariformis Ros. 
16. Veins 10—11 to a side 
in the falcate-ligulate 
segments 
112. D. utanagensis Hieron. 
14. Rhizome decumbent or short- 
creeping. South Brazil 
87. D. Regnelliana C. Chr. 
13. Indusium persistent. 
14. Rachis densely pilose by long, 
patent hairs 
85. D. pilosula (Kl. et Karst.) Hieron. 
14. Rachis short-hairy. 
15. Indusium black. Guatemala 
118. D. melanochlaena C. Chr. 
15. Indusium pale. Rhizome 
short-creeping. 
16* 
