151 
203 
Lamina terminating in a long, broad pinnatifid 
apex equal in length to the lower pinnate portion. 
8. Upper surface minutely pubescent. Veins about 
3-jugate, those of basal pair the anastomosing. 
212. D. Peripae (Sod.) C. Chr. 
8. Upper surface glabrous. Veins about 6-jugate, 
the lower 2—3 pairs alternately united. 
227. D. hastata (Fée) Urb. 
Lamina pinnate to short of the apex. 
8. 2—3 pairs of veins alternately united. Pinn: 
about 4 cm broad ... 264. D. leucophlebia (Christ) C. Chr, 
8. Only the two basal veins united, the follow- 
ing 2—4 connivent to sinus. Pinnz rarely 2 cm 
broad. 
9. Lower pinnz not or slightly reflexed, more 
or less shortened. 
10. Sporangia glabrous. No scales on cost: 
beneath. Veins 4—5-jugate. Jamaica. 
225. D. serrulata (Sw.) C. Chr. 
10. Sporangia setose by furcate hairs. Small 
scales on the coste beneath. Veins 7—8- 
jugate. Brazil .... 226. D. anoptera (Kze.) C. Chr. 
9. Lower 2—3 pairs of pinne much reflexed, 
scarcely shortened... 231. D. refracta (A. Br.) O. Ktze. 
3. Pinnz incised !/s of the way to the midrib (lobes longer than 
broad) or to a narrow wing to the costa. 
4. Rachis and. coste beneath subglabrous or slightly pubescent 
by short, stellate hairs and a few longer, simple hairs, not 
densely pulverulent by stellate hairs or tomentose by simple 
hairs. : 
5. Branched hairs with erect or horizontal branches. 
6. Rhizome erect or oblique. Pinnz rarely incised to the 
middle. 
7. Most pinnz sessile. 
8. Lamina terminating in a long, pinnatifid apex. 
Sporangia setose by branched hairs. 
227. D. hastata var. leptocladia (Fée). 
8. Lamina pinnate to short of the apex. Sporangia 
glabrous. 
9. Lower pinnz not reduced. Veins connivent, 
not united. Lobes oblique or falcate, close. 
Stipe in length equal to lamina. 
10. Lamina not gradually tapering from base 
to apex. Pinnz few (8—10-jugate). 
11. Lower pinnz with a short, cuneate, 
entire base, not much reflexed. 
229. D. magdalenica Hieron. 
11. Lower pinnz lobed to the base, much 
reflexed ....... 230. D. paucijuga (Kl.) C. Chr. 
10. Lamina gradually tapering from base to 
apex. Pinne numerous (15—25 to a 
side), incised to or above the middle. 
232. D. gemmulifera Hieron, 
