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 very 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. chrysolobum KIf. (B!) and 
A. mucronatum Beyrich (B!) differ not at all. I have seen numerous specimens, 
f. inst. GLAziou nr, 7949, MosÉw 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 (costz:e excepted) quite glabrous. 
— Grazriou nr. 12288 (B, H) and others. — This form is probably Nephro- 
dium chrysolobum Bak. Fl. Bras. and Syn. Fil. 
f. sericea Fée = Aspid. sericeum Fée, A. Schottianum 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, WanMiNG (H) — CraussEN (B). 
Sao Paulo: Santos, Usreri (C) — IavapeÉ, WeTTSTEIN u. SCHIFFNER (C) — ?UrnnicHT nr. 57 b (R). 
Parahyba: Górpr: (C) = f. glabrata. 
Rio Negro: Ega, Martius (B) — Segments dentate, approaches D. nigrovenia. 
British Guiana: ScHomBuRGK nr. 1167 (B — A. Schomburgkii Kl.; rather typical). 
A specimen in B gathered and determined (?) by Rapp1 as Polypodium falci- 
culatum Raddi, Opusc. sci. Bol. 5: 288. 1819; Pl. Bras. 1: 24 tab. 36 bis, belongs 
to the typical form of D. falciculata, but it does not agree perfectly with 
Rapprs 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. falciculata, while they in some characters are 
so different, that it is possible that they belong to a distinct species, intermediate 
between D. falciculata and D. ctenitis. I refer them to D. falciculata as 
var. paranaensis n. var. 
Syn. D. falciculata Rosenstock, Hedwigia 46: 116. 1906, where Dr. RosENSTOCK 
has given an excellent description of this variety. 
Type specimen: Paraná: Villa Nova, leg. ANNrEs, Rosenstock, Fil. austr. 
bras. exsic. nr. 79 (R, W). 
It differs from D. falciculata type by the following characters: 1) Stipe at 
base with numerous, long scales, almost as in D. submarginalis, 2) lamina larger 
