FROM THE FALKLAND ISLANDS. 149 
Of these, 19 are additions to the previous list and 3—Endoderma 
maculans, Pteridium Bertrandii, Epilithon Vallentine—are new species. On 
the other hand, it has been possible to remove from the older lists 12 names 
as erroneous records or synonyms of other species. 
In the Chlorophycez the presence of 4 members of the Siphoniz (2 species 
each of Codium and Bryopsis) is noteworthy in a flora having a well-marked 
subantarctic facies. In the Browns the Dictyotaceæ are, as might be 
expected, entirely absent. Amongst the larger species the dominant alge 
are Macrocystis and species of Durvillea, Lessonia, and Desmarestia, these 
taking the place of the Fucaceæ and Laminariaceæ of the northern seas. 
Some notes on the-Kelps by Mrs. Vallentin will be found on р. 141. The 
Floridez exhibit special luxuriance. Not only do we find the huge fronds 
of Gigartina radula and Iridea laminarioides, but amongst the, delicate 
Nitophylla and Delesserie many large and very beautiful Species occur. 
The most abundant red alge, in addition to the two above mentioned, are 
Callophyllis fastigiata, C. variegata, Plocamium secundatum, Glossopteris 
Lyallii, Ptilota magellanica, Polysiphonia spp., Plumaria Harveyi, Ballia 
callitricha, and the ubiquitous Ceramium rubrum. — Lithothamnia are 
frequent, but members of the Corallinæ-articulatæ, though represented by 
several species, are scarce. 
(b) Fresh-water Algæ.—According to Carlson’s list, the different groups 
figure in the following manner :— 
Myxophyceæ . . . . 6 
Bacillariales . . . . 36 
Heterokonte . . . . 1 
Chlorophyceæ . . . . 10 
53 
In the case of the Diatoms the above figures include also brackish and 
marine species, but in the Myxophyceæ and Chlorophyceæ the few marine 
species dealt with by Carlson are not taken into account in the above table. 
(c) Lichens.—No new species were obtained, but 6 names have been added 
to the existing list. 
It would appear from Mrs. Vallentin’s collection that the large foliaceous 
and fructiculose species are more plentiful in the West Falklands than in 
the East. Parmelia lugubris, for instance, is extraordinarily abundant ; and 
two very fine species of Sticta (S. endochrysa and S. Freycineti), found in 
several localities by Mrs. Vallentin, were not noted at all by Skottsberg. 
The same is the case with several Cladonias. In these and in other instances 
many of the species were gathered in the eastern islands by Hooker and the 
early collectors ; and the fact that they were not found by Skottsberg 
