FROM THE FALKLAND ISLANDS. 153 
and /ridæa cordata are abundant in the North Pacific, and the latter occurs 
also at the Cape. 
It has been shown above (p. 148) that there is no need to examine the 
differences in the algal flora of the Falkland Islands and Fuegia, but a brief 
comparison with that of Kerguelen, the subantarctic islands of New Zealand, 
and also with the true Antarctic, though not throwing much light on the 
origin of these floras, brings out a few interesting points. 
(b) Comparison with Kerguelen *.—This is the only representative of the 
South Indian division of the subantarctic, the flora of which has been at all 
satisfactorily investigated. The climate is decidedly colder than that of 
Magellan, as may be seen by comparing the mean monthly temperatures ob- 
tained by the ‘Gauss’ and Swedish Antarctic Expeditions. For this reason, 
as well as from its isolated position, the flora is, as might be expected, much 
poorer in spocies. Аз Hooker pointed out, it closely resembles the Fuegian 
and has no affinity with that of South Africa—it is, in fact, entirely sub- 
antarctic, though lacking a large number of species which are found in the 
Magellan region. From the presence of endemic phanerogams, 6 out of a 
total of 21, Werth (711, pp. 361-5) does not favour Hooker’s view that the 
flora immigrated from the west, and hence a more accurate knowledge of the 
marine alg: would be of great interest as bearing on this point. Kerguelen 
has several alge not found in the Magellan area; 14 are listed by Gain 
(712, pp. 128-132), but only six of these have any claim at present to be 
regarded as endemie, even if we include, as we may with fairness, two from 
Heard Island and Marion Island. The 14 species referred to are :— 
Desmarestia chordalis. | Delisea pulchra. 
(Callophyllis tenera.) Ptilota Eatoni. 
(Callymenia dentata.) (Rhodochorton Rothit.) 
Epymenta variolosa, Lithothamnium Kerguelenum. 
Plocamium Hookeri. (Scytothalia obscura) (Heard Island). 
(Nitophyllum crispatum.) Callophyllis elongata (Heard Island), 
Mitophyllum fuscorubrum. Cladhymenia pellucida (Marion Island). 
Of these, the 5 included between brackets may, for reasons explained in the 
footnote T, be disregarded. Of the remainder, Vesmarestia chordalis, Epymenia 
* Throughout this paper only large or fairly conspicuous species are used for comparative 
purposes, small species are too easily overlooked to be at present of value. 
t Callophyllis tenera.—lt is possible that С. tenera may be a synonym of С. fastigiata, 
‚ but the ‘Challenger’ examples, on which the record was based, may certainly be taken as 
forms of that species, which is also common in the Falklands. 
Callymenia dentata.—Record certainly incorrect, most of the specimens are Rhodymenia 
palmata. 
Nitophyllum crispatum.—A very doubtful record. Other species might easily be mistaken 
for this, which at present is only known from Auckland and Campbell Islands, 
Rhodochorton Rothii.—The Kew specimens are epiphytic on AAnfeltia, and certainly 
distinct from this northern species. Possibly new and undescribed. 
Scytothalia obscura.—A. very doubtful plant, based on a single and young specimen, 
LINN. JOURN.— BOTANY, VOL. XLIII. M 
