149 201 
3. Lamina pinnate below bul rarely to the middle. 
4. Midrib, veins beneath and indusium selose by long, simple 
hairs. Stellate hairs few. 
5. Free pinnz entire or subentire, not auricled at the upper 
base. 
6. Free pinne in 1—2 pairs, auriculiform, '/s—1 cm long 
208. D. Skinneri (Hk. 
6. Free pinnz several, 2—4 cm long: 
7. Upper surface (costze excepted) glabrous. Free pinnae 
broadly adnale to rachis. Veins rarely truly united. 
209. D. Levyi (Fourn.) O. Ktze. 
7. Upper surface finely pubescent. Lower free pinnz 
sessile with free base. Lower pair of veins often 
ünltedéke 60 E cene. a Sect teda 212. D. Peripae (Sod.) C. Chr. 
5. Pinnz lobed, auricled at the upper base. 
222. D. Jamesoni (Hk.) C. Chr. 
4. Midrib and veins beneath stellato-puberulous; indusium small, 
stellato-pubescent, or none. 
5. Free pinnz small, entire, the lower gradually reduced 
down wards. 
6. Free pinnz close, numerous, gradually reduced to mere 
auricles. Leaf coriaceous. Most veins free. 
213. D. dissimulans Maxon. 
6. Free pinne 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. D. guadalupensis (Wikstr.) C. Chr. 
5. Free pinnz large, serrulate, lower ones not reduced. 
227. D. hastata (Fée) Urb. 
O. Ktze. 
2. Lamina pinnate to short of the apex. 
3. Pinne entire or serrulate or shallowly lobed, lobes as a rule 
broader than long. 
4. Smaller species. Pinnz 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. Pinne entire or faintly crenate, charlaceous. Veins 
normally free. Leaves not terminating in a long, rooting 
apex. Leaf-tissue nearly glabrous. 
7. Pinne with a rounded, cordate base, oblong 1—11/2 
cinmlonsyeys icmmbroad). SEE 214. D. Mordafa (Fée) Urb. 
7. Pinne with a pair of acute, spreading auricles at 
base, the lower ones gradually reduced. 
215. D. sagittata (Sw.) C. Chr. 
6. Pinnz serrulate or lobed. Lower veins anastomosing. 
7. Surfaces, especially the veins, more or less greyish- 
pubescent by stellate hairs. 
8. Lamina herbaceous or membranous. Pinnz 
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. asterothrix (Fée) C. Chr. 
