198 146 



ü. dasyphylln is closely related lo D. pilosa var. pubescens and I have been 

 inclined to consider it the same plant; still it is much more hairy, the lamina 

 upwards suddenly narrowed into a pinnatifid apex and with 6 — 8 pairs of opposite 

 or subopposite, sessile or very short-stalked pinnæ, about 8 cm long by 2',i— 2' -> 

 cm wide, the lower ones not reduced but narrowed towards their base, all cut 

 about hallway down into close, broad subacute segments. Veins 6 — 7 to a side, 

 simple. Sori short, often nearly round, the sporangia setose. Rachis, costæ and 

 veins of both sides with many long, soft, pluricellular hairs. 



2t)5. Dryopteris polypodioides (Raddi) C. Chr. Ind. 285. 190ô. 



Syn. Cetenich polypodioides Raddi, Opusc. Sei. Bologn. 3: 284. 1819; PI. Bras. 

 1: 10 tab. 22. 

 Gymnoy ramme polypodioides Spr.; Bak. Syn. Fil. 377. 



Type from Brazil, Rio, Raddi (nol seen). The following specimens seen are 

 all from the mountains of Rio and are very uniform. Mosen nr. 2656 (H, Rg, S); 

 Glaziou nr. 7252 (B, H); Rathbun (W); U. S. Explor. Expedition 1838—42 (W); 

 Sem.ow (B). 



In colour, cutting and shape of pinnæ very similar to D. monosora of the 

 subgenus Goniopteris and also resembling Ü. ulsophilacea of the subgenus Ctenitis, 

 still very different by the oblong to linear sori and the setose sporangia. The 

 creeping rhizome is naked and the whole leaf practically glabrous, only the costæ 

 and costulæ are finely downy beneath. Lower pinnæ with a short, cuneate, entire 

 base, acuminate, at both sides equally incised about -;:i of the way down lo the 

 midrib into broad, obtuse, subfalcate segments; veins about 10 to a side, the lower 

 two running to the sinus. 



Subgenus 9. Goiliopteris (Presl) C. Chr. 

 Biolog. Arbejder tilegnede Eng. Warming pag. 83. I Uli. 



A large subgenus including about sixty good species and not closely allied to 

 other Dryopterides. Its best and most constant character is the presence of unicellu- 

 lar, forked or stellate hairs. Such hairs are to be found always on the scales 

 of the rhizome and lower part of the stipe and in most species they also cover 

 the rachis, especially upwards and above, and the costæ beneath. In some species 

 (D. nephrodioides and its relatives) the rachis is very densely but very shortly pul- 

 verulent by stellate hairs, in others (D. sclerophylla. I), asterothrix, D. reptans and 

 others) the surfaces (veins and leaf-tissue) bear minute hairs with horizontal bran- 

 ches. The stellate hairs are, as far as I have found, never sessile hut consist of a 

 short stalk, which bears at the point 2 — 6 blanches. The shape of the branches 



