14 ARKIV FOR BOTANIK. BAND 10. w:o 2. 
from Chiloé, Rio Pudeto, SKOTTSBERG 16. 7. 1908. It differs 
from var. Berteroana by the obtuse lobes and dense pubes- 
cence of rachis and coste. Further I am convinced that JoHow’s 
Polypodium punctatum (1. c. 36 fig. 21) is only a form of 
D. villosa. 1f I am right in this only one species of Dryo- 
pleris occurs in the islands, and it is interesting to note that 
this species alone represents the large genus in Southern 
Chile, where the southern limit of the genus is found not 
far south of Chiloé. From the whole subantarctic South 
America (Patagonia, Tierra del Fuego, Falkland Islands) no 
species of Dryopteris is known. In naming the above men- 
tioned forms D. villosa (L.) I agree with most authors; however, 
it must be remarked, that it is questionable, if they really 
belong to the true D. villosa from the West Indies. Under 
this name a number of forms generally are united, which 
probably will prove to be good species. 
Histiopteris incisa (THBG.) J. Sm. var. flavescens (Corra). 
Syn. Pteris flavescens Colla, Mem. Ac. Torino 39:37 
tab. 67. 1836. — P. patens Kze. Anal. pterid. 28. 1837. P. 
incisa Johow, Helechos Juan Fernandez 24. Litobrochia incisa, 
patens, appendiculata Gay, Fl. Chil. 6: 489—491. 
Juan Fernandez: Masatierra, Valle Colonial, n:r 400, 
22. 8. 1908. This variety differs from the type (Pteris incisa 
Thbg. from South Africa) and the Brazilian form (P. elegans 
Sw.) by its nearly tripinnatifid lamina with oblong tertiary 
segments and by its short, often interrupted sori, which 
scarcely reach above the middle of the segment. 
Pleurosorus papaverifolius (Kze.) Fée. 
Patagonia: Territ. S:ta Cruz, Lago San Martin, in fis- 
suris rupium, 19. 3. 1905, P. Dus£N n:r 5917. 
New for the flora of Argentina. It is a very interesting 
species, which resembles Asplenium ruta muraria in a degree 
that everyone would consider it a form of that species, if 
it was told that the specimens were collected in Europe. It 
differs only by its more glandulose fronds and exindusiate 
sori. I am very inclined to believe that the two species are 
closely related, although they generally are placed in two 
different genera or even tribes. 
