92 40 



narrow wing. Veins simple, 6—8 to a side, the basal ones much upcurved and 

 reach the margin above sinus, the upper ones veW oblique and run out in the 

 teeth, about all soriferous. Sori middle-sized, yellowish brown, a little above the 

 middle of the vein. Indusium rather large, yellowish, glanduloso-ciliate, persistent. 



The form here described is very common in the mountains round Rio; the 

 original specimens of Pol. ciliatum Pr. (hb. Presl!), Aspid. chrysolohum Klf. (B!) and 

 A. mucronatum Beyrich (B!) differ not at all. I have seen numerous specimens, 

 f. inst. Glaziou nr. 7949, Mosen nr. 98, 2696, 2697 etc., and they vary only a little, 

 mainly in pubescence. Two extreme forms can be separated: 



f. glabrata Hieron. msc. 



Surfaces (costæ excepted) quite glabrous. 



— Glaziou nr. 12288 (B, H) and other.s. — This form is probably Nepbro- 

 diiim chrysolohum Bak. Fl. Bras, and Syn. Fil. 



/'. sericea Fée = Aspid. sericeiim Fée, A. Schottianiim Kze. 



Both surfaces throughout densely and shortly glanduloso-pubescent. 

 — Glaziou nr. 957, 1658 (H). 



Between these two extremes one finds numerous intermediate forms, and I 

 consider them all belonging to the typical form of the species. This seems to be 

 rare in other parts of Brazil. I have seen the following specimens only: 



Minas Geraes: Lagoa Santa, Warming (H) — Claussen (B). 



Sao Paulo: Santos, Usteri (C) — Iguapé, Wettstein u. Schiffner (C) — ? Ulbricht nr. 57 b (H). 



Parahyba: Göldi (C) = f. glabrata. 



Rio Negro: Ega, Martius (B) — Segments dentate, approaclies D. nigrovenia. 



British Guiana: Schomburgk nr. 1167 (B = A. Schomburgkii Kl.; rather typical). 



A specimen in B gathered and determined (?) by Raddi as Polypodhini falci- 

 culatum Raddi, Opusc. sei. Bol. i: 288. 1819; PI. Bras. 1: 24 tab. 36 bis, belongs 

 to the typical form of D. falciciilata , but it does not agree perfectly with 

 Raddi's description. What P. falciculatum Raddi may be is questionable; probably 

 it is a form of the present species. 



In the southern states of Brazil are to be found a series of forms, which do 

 not differ essentially from typical D. falciciilata, while they in some characters are 

 so different. Dial it is possible that they belong to a distinct species, intermediate 

 between D. falciculaia and D. ctenitis. 1 refer Ihcm to D. falciculata as 



var. paranaensis n. var. 



Syn. I), falciculata Rosenstock, Hedwigia 4(>: 116. 1906, where Dr. Rosknstock 

 has given an excellent description of this variety. 



Type specimen: Parana: Villa Nova, leg. Annies, Rosenstock, Fil. aiislr. 

 bras, exsic. nr. 79 (R, W). 



11 differs from D. falciculata type by the following characters: 1) Stipe at 

 base with numerous, long scales, almost as in D. subinaryinalis, 2) lamina larger 



