112 60 



it differs a little in pubescence, the costæ beneath being furnished with some scat- 

 tered, articulated hairs onlj', 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 pinnæ the two species fully agree. 



D. grandis (Pr.) subsp. macroptera (Klf.) (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, hipinnate with deeply lobed pinnules. It differs from the species 

 mentioned by its glabrous rachis and costæ. 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: Bahos-Pintuc, Stübel nr. 903 (B!). 



A bipinnatifid species excellently described and figured by Hieronymus 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 Blunchetianum 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 Cienitis 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, Blanchet nr. 2928. 



2. Aspidium obtusilohum Fée, 8 mém. 105. 1857; Dryopteris huatuscensis C. Chr. 

 Ind. 271. 1905. — Mexico, Huatusco, Schaffner nr. 105. 



This is perhaps a form of D. submarginalis. 



3. Phegopteris fluminensis Fée, Cr. vase. 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. vase. Br. 1: 136. 169. — Brazil, Serra os Orgaos, 

 Glaziou nr. 1764. — In Ind. Fil. referred to D. submarginalis, it is perhaps 

 the same as D. pedicellata. 



