149 201 



.'}. Lamina pinnate below but rarely to tbe middle. 



4. Midrib, veins beneatb and indusiiim setose by long, simple 

 hairs. Stellate hairs few. 



5. Free pinnæ entire or subentire, not aiiricled at the upper 

 base. 

 6. Free pinnæ in 1 — 2 pairs, auriculil'orm, '/a — 1 em long 



208. D. Skinneri (Hk.) O. Ktze. 

 6. Free pinnæ several, 2 — 4 cm long. 



7. Upper surface (costæ excepted) glabrous. Free pinnæ 

 broadlv adnate to rachis. Veins rarelv trulv united. 



209. D' Levyi (Fourn.) (). Klze. 

 7. Upper surface finely pubescent. Lower free pinnæ 



sessile with free base. Lower pair of veins often 



united 212. D. Peripae (Sod.) C. Chr. 



5. Pinnæ lobed, auricled at the upper base. 



222. Ü. Jamesoni (Hk.) C. Chr. 

 4. Midrib and veins beneath stellato-puberulous; indusium small, 

 stellatopubescent, or none. 



5. Free pinnæ small, entire, the lower gradually reduced 

 downwards. 



(5. Free pinnæ close, numerous, gradually reduced to mere 

 auricles. Leaf coriaceous. Most veins free. 



213. Ü. dissinnilans Ma.\on. 

 6. Free pinnæ few (1 — 4 pairs) and distant. Leaf mem- 

 branous or chartaceous. Veins normally anastomosing 

 and forming low meshes along the midrib of the lamina. 



211. 1). yuadaliipensis (Wikstr.) C. Chr. 

 Ô. Free pinnæ large, serrulate, lower ones not reduced. 



227. D. hastata (Fée) Urb. 

 2. Lamina pinnate to sliort of the apex. 



3. Pinnæ entire or seirulate or shallowly lobed, lobes as a rule 

 broader than long. 



4. Smaller species. Pinnæ seldom over 4 cm long, 1 cm broad. 

 5. Rachis and veins more or less stellato-puberulous, often 

 also hairy by longer, simple hairs. 



6. Pinnæ entire or faintly crenate, chartaceous. Veins 

 normall}' free. Leaves not terminating in a long, rooting 

 apex. Leaf-tissue nearly glabrous. 

 7. Pinnæ with a rounded, cordate base, oblong 1 — l^'s 



cm long, Va cm broad 214. D. cordata (Fée) Urb. 



7. Pinnæ with a pair of acute, spreading auricles at 

 base, tbe lower ones graduallv reduced. 



215. U. sagittata (Sw.) C. Chr. 

 (5. Pinnæ serrulate or lobed. Lower veins anastomosing. 

 7. Surfaces, especially the veins, more or less greyish- 

 pubescent by stellate hairs. 



8. Lamina herbaceous or membranous. Pinnæ 

 short-stalked. 

 9. Sporangia glabrous. Leaves often prolongated 



into a long rooting tail. 216. D. reptans (Gmel.) C. Chr. 

 9. Sporangia setose by forked hairs. Leaf not 

 proliferous. Surfaces densely pubescent by 

 stellate and simple hairs. 217. D. as/ero?/in.i- (Fée) C. Chr. 



