246 194 



var. joinvillensis Ros. Hedwigia 43: 225. 1904. 



Syn. Drgopteris joinvillensis Ros. Hedwigia 46: 120. 1907. 



Sta. Catharina: Joinville, Schmalz nr. 100 (R). 



A very large form : pinnæ 25 X 4 cm ; veins 18 — 20 to a side. Rachis gemmi- 

 ferous. Pubescence about as in the former variety, but stellate hairs fewer and 

 scales more numerous. 



var devolvens (Bak.) — Fig. 39. 



Syn. Nephrodium devolvens Bak. Journ. of Bot. 1885: 217. 

 üryopteris devolvens C. Chr. Ind. 261. 1905. 



Differs from the type by 1) size: lamina 3 — 4 dem long; pinnæ 12-15 cm 

 long, 2'/2 cm broad, 2) the basal pinnae being distinctly reflexed, 3) lamina up- 

 wards suddenly narrowed into a broad, pinnatifid apex, 4) segments close, even 

 contiguous, acute, subfalcate; veins 10 — 12 to a side. In pubescence it does not 

 differ materially; still the scales of rachis and costæ beneath are very few, and 

 the rachis and costæ beneath are clothed with fine, simple hairs besides the stel- 

 late hairs. The upperside is hairy towards the margins, the underside finely 

 downy by simple hairs. Veins not prominent. 



A distinctly looking variety, well-marked by its close, acute segments and the 

 upwards suddenly narrowed lamina, but I find it impossible to distinguish it spe- 

 cifically from D. lugubris. Several of the specimens referred to the type show now 

 one now another of the characters, which mark the variety. 



The following specimens are rather uniform: 



Rio: Glaziou nr. 15766 (B, H, type-number) — Minas Geraes: Caldas, Mosen nr. 2156 (Rg, Hb. 

 Brux. — Sio Paulo: Piritabo{?), F.W.Bauer nr. 49 (R) — Capivary, Gerder nr. 88 (R) — 

 Campiiîas, Heiner nr. 568 (Rg) — Toledo, Ulbricht nr. 51 (Rg; proliferous) — Matt o 

 Grosso: Santa Anna da Ciiapada, Malme nr. 2131 (Rg). 



Synonyms of 1). lugubris are probably: 



Aspidium coadunatum Klf. Enum. 239. 1824 and 



Nephrodium inaequale Schrad. Gott. gel. Anz. 1824: 869, both from the vicinity 

 of Rio. A description of the former by Mettenius is to be found in MS in (B) 

 and from this description it seems to be identical with var. devolvens. The name 

 of Kaulfuss has priority, if his species is a form of our D. lugubris, and I have 

 no doubt that this is the case. We have thus here a common Brazilian species, 

 which is described as new at least 6 times, viz 1824 by Kaulfuss (coadunatum) 

 and ScHRADER ^inaequale), 1858 by Mettenius flugubrej, 1869 by Fée fquadrangu- 

 larej, 1885 by Bakek fdevolvensj and 1907 by Rosenstock fjoinvillensisj. This 

 shows how necessary it is to compare specimens with descriptions and authentical 

 specimens of described species before describing them as new. 



Aspidium nitidulum Kze.; Ettingsh. Farnkr. 188 tab. 123 f. 3. 1865 is perhaps 

 the same. 



