CHRISTENSEN, ON SOME SPECIES OF FERNS. 13 
horizontal or oblique, with a few scales. Leaves on long 
thread-like stalks without glands, pinnate with adnate, 
slightly erenate pinne, the apex broad, rounded, crenate: 
texture very thin; veins distinct, pinnate in the pinne. 
Found in the same locality as the seedlings of B. ma- 
gellanicum. 
While the seedlings of the two first-named species, which 
generally are considered to be closely allied, resemble each 
other in having entire leaves, they are in other respects very 
different, especially in texture and in the length of the stem. 
The third species B. penna marina is evidently a very remote 
ally of the two others and probably belongs to a distinct 
group, which also includes B. spicant. 
Dryopteris villosa (L.) O. Krze. : 
Juan Fernandez: Masatierra, Valle Colonial in forest 
23. 8. 1908. 
var. Berteroana (Hook.) 
Syn. Polypodium Berteroanum Hook. sp. fil. 4: 269, 1862; 
P. vestitum Johow, Helechos Juan Fernandez 37 fig. 22. 
Juan Fernandez: Masatierra, Valle Colonial, 22. 8. 1908 
— Masafuera, in Quebrada de las Casas, 28. 8. 1908. 
It is impossible for me to distinguish these two forms 
specifically. In my Index I have referred P. Berteroanum 
Hk. to JD. subincisa (WILLD.) Urban, and the specimens 
seen, which correspond exactly with Hooker’s description, 
are apparently exindusiate, while the specimen referred to 
D. villosa (L.) has distinct, setose indusia; but in other respects 
the two forms fully agree. In both of them I find the coste 
and especially the midribs of the pinnules beneath clothed 
with many broadly ovate, brown, thin scales and with spread- 
ing, whitish, deciduous hairs; rachis, coste? and costules 
densely pubescent above, undersurface finely glandular. 
Lamina tripinnate-quadripinnatifid, the ultimate lobes acute. 
Whether the variety is different from Polypodium spectabile 
Klf. Enum. 121 (type from Chile!) is questionable. KAULFUSS” 
description agrees very well with our specimens. Jonow 
referred it to Phegopteris vestita Philippi, Linnaea 29: 107, 
but certainly wrongly. To this belongs, I think, a specimen 
