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Key to the Species. 
Sori exindusiate, or (in D. adenopteris), furnished with minute, fugacious indusia. 2 
Sori indusiate; indusia large, coriaceous, generally persistent. Large species with 
tri- -quadripinnatifid lamina, very hairy with long hairs or downy beneath. 39 
Lamina bipinnatifid-tripinnatifid, often tripinnate at base. Tertiary segments of 
middle pinne entire or faintly crenate or serrate. 3 
Lamina tripinnatifid-quadripinnatifid, quadripinnate at base. Tertiary segments 
of middle pinnz at least pinnatifidly lobed. Very large species. 29 
Lamina bipinnatifid at the middle; Se segments of middle pinnz entire; 
lamina lanceolate or ovate-lanceola 4 
Lamina tripinnatifid. at. the matin “deltoid or deltoid-ovate; secondary seein 
deeply lobed. 
Lamina glabrous or short hairy or with a few longer hairs. 5 
Lamina throughout villous with long, flexible hairs 11 
Coste above strigose with shorter or longer antrorse hairs. Andine and West- 
Indian species 
Costz above perfectly glabrous. Brazil. 335. D. grandis (Pr.) C. Chr. 
Coste beneath glabrous or with some few longer hairs; lamina brownish 
when . dried. 7 
Costze beneath pubescent with short hairs, often with longer hairs intermixed, 
lamina greyish green when dried. 10 
Andine species. Coste beneath without whitish hairs 8 
Guadeloupe. Costz beneath with some longer whitish hairs; scales numerous 
castaneous, entire. 321. D. macrotheca (Fée) C. Chr. 
Pinne scarcely incised to costa, the segments entire (the ae basal ones 
excepted). Sori confined to the anterior branch of a forked vei 9 
Lower pinnez pinnate with lobed pinnule. go branches of a forked vein 
frequently soriferous 320. D. biserialis (Bak.) C. Chr. 
Sori placed at the hase of the anterior branch of the forked vein. Scales narrow, 
rk, 318. D. honesta (Kze.) C. Chr. (1 nr. 48 
Sori above the middle of the anterior acct of the forked vein. Scales broader, 
yellowish, 319. D. yungensis hing et Ros.) (I nr. 49). 
Basal segments redused. Coste beneath vacons A pubesce 
322. 0. Pail C. Gh. 4 ur. 50) 
Basal segments not reduced. Coste beneath pubescent with shorter and longer 
hairs intermixed. 23. D. platyloba (Bak.) C. Chr. (1 nr. 51). 
Rachises Hon woolly and without scales. Andes 
327, D. hirsuto-setosa Hieron. (1 nr. 53) 
a7. 
Rachises densely woolly with pale scales intermixed. 
: . te 343. ib hintula (Kze.) C. = 
— and West Indian species. > 
Species from Southeast Brazil (+ Uruguay, Paragua ay). 
Lamina beneath glabrous or with — longer hairs on coste and mpgs 
or finely downy without long hai - 90 
Lamina beneath with numerous lone flexible hairs. 
