9. Sori close to the margin. West-Indian species 
74 
149. D. limbata (Kze.) O. Ktze. 
9. Sori about medial. Ecuador .... 170. D. mulliformis n. sp. 
8. Basal segments without interne auricle. 
9. Lamina rather gradually reduced downwards 
140. D. Sprengelii var. Sherringii (Jenm.). 
9. Lamina abruptly reduced, the lowermost pinnz 
glanduliform. 
10. Both surfaces finely pubescent. Segments 2—4 
munshbroadge c v 143. D. conformis (Sod.) C. Chr. 
10. Lamina quite glabrous. Segments 5—7 mm 
broad "cae. 161. D. euchlora (Sod.) C. Chr. 
6. Rachis rather scaly. Lamina suddenly with 5—8 pairs 
of auriculiform pinne.......... 150. D. corazonensis (Sod.) C. Chr. 
. Lamina coriaceous or chartaceous with the margins more 
or less revolute, downwards abruptly narrowed with 2—5 
pairs of distant, glanduliform pinnz. Coste beneath often 
with some few scales. 
6. The revolute margins not covering the sori. Basal seg- 
ments of larger pinne generally much reduced. 
7. Coste beneath glabrous or more or less pilose by 
short, unicellular hairs. 
8. Lamina quite glabrous ..... 151. D. semilunata (Sod.) C. Chr. 
8. Lamina (at least rachis) more or less pilose. 
9. Pinney about 5 em long with very oblique seg- 
ments ..... 152. D. canelensis Ros. 
9. Pinne 10—20 cm long, the segments often falcate 
but not very oblique. 
10. Costz:e beneath setose by more or less antrorse 
stiff hairs and generally furnished with scat- 
tered small, brown scales. Indusium none. 
11. Sori medial. Largest pinnz scarcely 12 cm 
long. Lamina (costa excepted) subglabrous 
153. D. nervosa (Kl.) C. Chr. 
11. Sori supramedial. Largest pinnee 15—20 
cm long. Lamina, especially beneath, setose. 
12. Segments rather close with acute sin- 
uses between ...... 154. D. rudis (Kze.) C. Chr. 
12. Segments patent separated by broad 
QDEDESIDISeST- EE 155. D. Engelii Hieron. 
10. Coste beneath pilose by patent hairs. 
11. Largest pinnz 10—18 cm long, horizontal 
or ascendent, sparsely strigose beneath 
on coste and costule only. Receptacle 
glabrous. Segments close, oblique or sub- 
falcate. 
19. Basal segments without auricle. 
13. Veins 11—12-jugate. Segments ob- 
luc P P. detecto 158. D. strigifera Hieron. 
13. Veins 14—15-jugate. Segments 
acute 19» 2:159: Dy Brauseugtirenons 
12. Basal segments with an interne auricle 
170. D. multiformis n. sp. 
