180 МК. А. D. COTTON ОМ CRYPTOGAMS 
DisrRiB. Falkland Islands, Graham Land (?). 
(7. aggregata was described by Hooker & Harvey in 1845 from specimens 
collected in Berkeley Sound. The material was sterile and the generic 
position of the genus was marked with a query. In 1889 Hariot, on the 
evidence of a specimen from the Hooker collection, reduced the plant to a 
synonym of Ahnfeltia plicata. His conclusions were incorporated ір 
De Toni’s * Sylloge, and the name has disappeared from the Antarctic lists. 
Hariot’s specimen, however, was evidently wrongly named, since the type- 
material in Hooker’s herbarium is quite distinct from Ahnfeltia, being 
stouter, springing from a large basal disk, and possessing internally larger 
cells. The plant has, as Hooker states, all the appearance of a Gracilaria. 
Fortunately it is now possible to confirm this point, as in Miss Hennis’s 
collection there are a few specimens of the same species, some of which bear 
the well-marked (Gracilaria cystocarps. Hooker’s specimens are slightly 
stouter than those collected by Miss Hennis, but this is probably due to their 
being somewhat old. 
Though G. aggregata would appear to be a rather uncommon plant, it is 
possible that it may have been collected in South America and recorded 
under Gymnogongrus spp. or other name. It resembles in habit the short, 
much branched forms of (Т. confervoides, and it is not improbable that the 
Antarctic record of the latter species (Hariot, '07) refers in reality to 
G. aggregata. From (т. confervoides the present plant differs in its large 
scutate base, small medullary cells, and apparently also in its consistently 
shorter and more branched habit. 
RHODYMENIA PALMATA, Grev. А17. Brit. p. 93 ; Hook. f. et Нате. in Fl. Ant. 
ii. p. 475. 
E. Falklands; Berkeley Sound, Port William, Æooker ; Port Stanley, 
Cunningham. W. Falklands ; West Point Island, Vallentin. 
DisrriB. N. Atlantic. N. Pacific (Alaska-N. California, Japan). Fuegia, 
Falkland Islands, 8. Georgia, Kerguelen, 
Hooker remarks :—“ The Dulse so commonly eaten on the coasts of 
Scotland is not an unfrequent seaweed on the shores of the Falkland Islands, 
where it was quickly recognized by some of the north-country seamen of the 
* Erebus’ and ‘Terror.’ ” 
It may be remarked here that the record of Л. palmata, var. sobolifera 
(=Л. sobolifera, Hook. f. et Harv., non Grev.), in ‘Flora Antarctica’ is 
incorrect, all the specimens representing Callophyllis fastigiata ; also that the 
‘Challenger’? Cailymenia dentata records from Kerguelen should be deleted, 
the specimens being referable to А. palmata. 
R. FLABELLIFOLIA, Mont. Voy. ‘ Bonite, p. 105; {lariot, Miss. Cap Horn, 
p. 77. Л. palmetta, Hook. f. et Harv. in Fl. Ant. ii. р. 475 (non Grev.). 
Falklands, Gaudichaud. 
