8 ARKIV FOR BOTANIK. BAND 10. w:o 2. 
shaped epidermal cells. From the apex of the pustule a nar- 
row channel conducts to the cave, which is seen through the 
lense as a small pit at the top of the pustule. In the cave 
CaCO; is secreted. 
Although 5. Schottii is very closely related to B. attenua- 
tum (Willd.) Mett., l think it can be copsidered a distinct 
species. From B. meridense (Kl.) C. Chr., under which name 
I united in my Index the American forms generally referred 
to b. attenuatum, it differs by the shape of the lamina, which 
narrows gradually to both ends, upwards pinnatifid to the 
very apex, downwards through a row of very short (!/» em.) 
but broad (1!/» cm.) auricles, which are all contiguous as 
shown on Corra4's plate. The middle pinne are closely pla- 
ced, all connected at the very sligthly widened base, c. 10 em. 
long, 8—10 mm. broad. The rhizome is wide scandent (ac- 
cording to Jonow and SKOTTSBERG) and densely clothed with 
dark-brown, glossy, lanceolate scales. In the lower part of 
the rachis some few appressed scales are to be found. Tex- 
ture coriaceous, the veins distinctly raised beneath. Colour 
pale-green. In B. meridense the lower reduced segments are 
few, distant and free, the middle ones remote and very wi- 
dened at base, often free, and the lamina terminates in an 
entire segment equal in size to the lateral ones. From ty- 
pical B. attenuatum from Mascarene Islands and South Africa 
B. Schottii differs inter alia by the scales of the rhizome. 
JoHow enumerates Lomaria L’Herminiert Bory in his list 
of the ferns of Juan Fernandez, but remarks: »Este helecho 
tiene estrecha afinidad con la L. attenuata Willd. i puede tal- 
vez reunirse con ella en una sola especie.» The typical West- 
Indian L. L’Herminieri is however a distinct species, which 
can not be confounded with B. attenuatum or B. meridense. 
Thus I am inclined to believe that L. L’ Herminieri Johow (non 
Bory) is a form of 5. Schotti. 
Blechnum chilense (Klf.) Mert. 
Patagonia occ. Canal Sarmiento, P:to Riofrio, 13. 6. 1908. 
Falkland Isl. West Island, Sharp Peak, n:r 75, 11.12. 1907. 
A new addition to the flora of the Falklands. The plant 
collected here is a very robust, thick-leaved form, with the 
stem and rachis 1/2 em. thick. 
