jl: 
35 87 
7. Scales toothed, without long cilies. Veins 12— 18-jugate. 
8. Scales of rachis adpressed. Sori near the midvein; indu- 
srumiipeusistent ^3: Cose Seek 37. D. Anniesii Ros. 
8. Scales of rachis broad, loose. Sori medial without di- 
Stimcipindumnstumiott935 3995 seen Oe 38. D. fenestralis n. sp. 
6. Scales entire with a pocket-shaped base. 
7. Veins 8—10-jugate. Upperside glabrous. West-Indian species. 
39. D. vellea (Willd.) O. Ktze. 
7. Veins 10—12-jugate. Both surfaces hairy. Brazil. 
40. D. cirrhosa var. eriocaulis (Fée) 
2. Segments normally distinctly serrated or lobed, at least those of the basal 
pinnz. Central American and Andine species. 
3. Basal pinnz not considerably enlarged. Indusium distinct. 
4. Veins reaching the margin. 
5. Surfaces with scattered, short, thick hairs, not glanduloso-pubescent. 
Larger species, generally dark-green 41. D. nigrovenia (Christ) C. Chr. 
5. Both surfaces (coste excepted) glabrous or glanduloso-pubescent. 
Lamina thin, light-green. 
6. Surfaces not glanduloso-pubescent, scales of stipe and rachis 
rather thin, from a broad base narrowed into a hair-like apex, 
those of rachis bullate......... 42. D. Tonduzii (Christ) C. Chr. 
6. Surfaces throughout glanduloso-pubescent. Scales of stipe and 
rachis very narrow, black-brown ......... 43. D. strigilosa Dav. 
4. Veins not reaching the margin. Scales of coste bullate. Surfaces 
glabrous. Lamina firm, dark-green. 
5. Pinnz pinnatifid only; segments serrated. 
6. Veins 2—3-jugate. Stipe and rachis slender. 
44. D. Lindeni (Kuhn) O. Ktze. 
6. Veins 5-jugate. Stipe strong...... 45. D. Salvini (Bak.) O. Ktze. 
5. Pinnze pinnate in the lower half; segments or pinnules ligulate. 
entire or deeply lobed with 2—3 obtuse lobes. 
46. D. lanceolata. (Bak.) C. Chr. 
3. Basal pinne the largest, bipinnatifid; upper ones smaller, pinnatifid with 
entire segments. 
4. Small Veins not reaching the margin. Sori very large, persistent. 
46. D. lanceolata (Bak.) O. Ktze. var. 
4. Larger. Veins reaching the margin. Exindusiate. 
47. D. Hemsleyana (Bak.) C. Chr. 
Veins normally furcate. 
2. Hairs of the common type, short, rarely unicellular. Veins generally not 
reaching the margin. 
3. Segments narrow, uniformly serrate. Scales bullate. Indusium large. 
12° 
