112 60 
it differs a little in pubescence, the coste: beneath being furnished with some scat- 
tered, articulated hairs only, and especially by the position of the sori, which are 
placed near the base of the branches of the forked vein and nearer the costa and 
the margin. Generally both branches are soriferous and the sori therefore are in 
pairs, from which character BAKER took his specific name. The species is some- 
what smaller than the preceding but fully tripinnatifid; in colour, texture, the 
adnate and decurrent segments and upper pinnz the two species fully agree. 
D. grandis (Pr.) subsp. macroptera (KIf.) (see Ind. Fil. 269) is a species of the 
same relationship as the two preceding ones; it is often bipinnatifid only but can 
be much larger, bipinnate with deeply lobed pinnules. It differs from the species 
mentioned by its glabrous rachis and cost. It is common in South Brazil. 
Species of uncertain position. 
53. Dryopteris hirsuto-setosa Hieron. Hedwigia 46: 343 tab. 6 fig. 16. 1907. 
Type from Ecuador: Banos-Pintuc, SrüsEL nr. 903 (B!). 
A bipinnatifid species excellently described and figured by HrEROoNvMus and I 
have nothing to add. It is certainly related to some of the sub-species referred to 
D. subincisa (Ind. Fil. 295), especially Polypodium Blanchetianum Kze. and P. Karste- 
nianum Kl., with which “subspecies” it agrees in pubescence. As the two sub- 
species mentioned certainly are closely allied to the true D. subincisa, which can 
be regarded as the typical species of a proper group to which D. platyloba and 
D. biserialis also belong, it is very likely that D. hirsuto-setosa belongs to the same group. 
It differs from all the species in this paper referred to Cfenitis by its pubescence; 
the whole leaf is densely pilose by very long, soft, flexible, pluricellular hairs but 
apparently without scales. 
The Brazilian D. hirtula (Kze.) C. Chr. is clothed with very similar hairs and 
is another species of a very doubtful systematic position. It is fully tripinnatifid 
and, therefore, excluded from the present monograph. 
Unknown species of § Ctenitis. 
1. Phegopteris Blanchetiana Fée, Gen. 245. 1850—52 — Bahia, BrANCHET nr. 2928. 
2. Aspidium obtusilobum Fée, 8 mém. 105. 1857; Dryopleris huatuscensis C. Chr. 
Ind. 271. 1905. — Mexico, Huatusco, ScBArFNER nr. 105. 
This is perhaps a form of D. submarginalis. 
3. Phegopleris fluminensis Fée, Cr. vasc. Br. 1: 97. 1869 — Rio de Janeiro, GLAziou 
nr. 965. — In Ind. Fil. referred to D. deflexa, but judging from the description 
it can be every other species. 
4. Aspidium nervatum Fée, Cr. vasc. Br. 1: 136. 169. — Brazil, Serra os Orgaos, 
Graziou nr. 1764. — In Ind. Fil. referred to D. submarginalis, it is perhaps 
the same as D. pedicellata. 
