209 
5 
4. Larger 
150 
8. Lamina coriaceous. Pinnz sessile. 
218. D. sclerophylla (Kze.) C. Chr. 
7. Surfaces hairy on the veins only, leaf-tissue gla- 
brous, at least not pubescent by minute, stellate hairs. 
8. Coste beneath stellato-puberulous. 
215. D. sagittata var. tenebrica (Jenm.). 
8. Coste beneath setose by simple hairs or glabrous. 
9. Pinne short-stalked, rather deeply lobed; 
cost beneath setose. West-Indian species. 
10. Veins simple, often prominent beneath. 
Leaf-tissue glabrous; indusium setose. 
219. D. asplenioides (Sw.) O. Ktze. 
10. Veins often forked. Leaf-tissue pubescent. 
220. D. bermudiana (Bak.) Gilb. 
9. Pinnz sessile. South-American species. 
10. Lamina terminating in a long pinnatifid 
apex. Rachis and coste beneath rather 
setulose; upper surface pubescent. 
11. Pinnze not auricled at base. 
212. D. Peripae (Sod.) C. Chr. 
11. Pinne auricled at base, the basal 
ones reflexed. 
12. Andes. Veins 2—3-jugate. Basal 
pinnze reduced. 222. D. Jamesoni (Hk.) C. Chr. 
12. Brazil. Veins 5—6-jugate. Basal 
pinne scarcely reduced. 
223. D. Warmingii n. sp. 
10. Lamina pinnate to short of the apex, 
practically glabrous throughout. 
Stellate hairs none, but rachis, ribs and indusium setose 
by simple hairs. Pinn:z auricled at the upper base. 
221. D. semihastata (Kze.) O. Ktze. 
species: pinne 8—15 em long, 1'/2—2'/2 em broad, 
broadly serrate. Rhizome not creeping. 
Most pinnez auricled at their upper base, all sessile, the 
lower ones reflexed. Stellate hairs few or none; upper 
surface strigose by adpressed hairs. 
5. 
6. 
Under surface pubescent by short, non-adpressed hairs. 
Only the basal pair of pinn: reflexed. Rachis with 
few stellate hairs. Pinnz scarcely more than 5 cm 
longi cereo cst soe 223. D. Warmingii n. sp. 
Under surface strigose by adpressed hairs. 2—3 pairs 
of pinne reflexed. Stellate hairs none. Pinna 8—15 
emidoug wc oc Mu caen ee 224. D. macrotis (Hk.) O. Ktze. 
Pinne not auricled. Stellate hairs on rachis and often 
on coste beneath. Leaf-tissue generally glabrous. 
6. 
Lower veins as a rule connivent to sinus, rarely united. 
7. Most pinne sessile, lower ones much reflexed. 
230. D. paucijuga (Kl.) C. Chr. 
7. Most pinne stalked, lower ones scarcely reflexed. 
228. D. pyramidata (Fée) Maxon. 
Basal pair of veins normally united, or at least run- 
ning side by side to the sinus. 
