162 MR. А. D. COTTON ON CRYPTOGAMS 
Gain gives this species in each of his lists as occurring in the Falkland 
Islands, but T have found no published record of the fact. It has, however, 
been recorded from other parts of the subantarctic. 
RHIZOCLONIUM PACHYDERMUM, var. MACLOVIANUM, (Carlson, Süsswasser- 
algen aus der Antarktis, p. 53, fig. 19. 
E. Falklands ; Port Louis, Skottsberg. 
DisrriB. Falkland Islands. 
Distinguished from the type by the unicellular rhizoidal branches, which 
are usually bifurcate at the tip. 
CLADOPHORA FALKLANDICA, Hook. f. et Harv. т Lond. Journ. Bot. iv. 
(1845) p. 294 ; Fl. Ant. ii. p. 495, tab. 143. fig. 1. 
E. Falklands ; Berkeley Sound, St. Salvador Bay, Hooker. 
Disrri8. Falkland Islands. 
C. FLEXUOSA, Dillw. Hist. Brit. Conf. tab. 23. 
E. Falklands ; Berkeley Sound, teste Hooker. 
DisrRIB. N. Atlantic. 
C. GRACILIS, Айг. Phyc. Germ. p. 215. 
W. Falklands ; Shallow Bay, at extreme low-water line, Vallentin. 
DisrRIB. Throughout Europe, Atlantic coast of N. America, New Zealand, 
Tasmania (teste Grunow). 
New to the Falkland area. The specimens are indistinguishable from 
those of southern England, and were procured from similar situations (i. e. 
quiet land-locked bays). С. falklandica, which is closely allied and may 
even be an extreme form, differs in the much shorter cells of the ultimate 
branches. 
C. LÆTE-VIRENS, Aütz. Phyc. Germ. p. 214. 
E. Falklands, d" Urville, teste Hariot. W. Falklands; Roy Cove, Vallentin. 
Disrri8. North Atlantic. 
Two specimens collected by Mrs. Vallentin are doubtfully referable to 
this species. 
С. SUBSIMPLEX, Айг. Sp. Alg. p. 41. С. simpliciuscula, Hook. f. et Harv. 
in Fl. Ant, ii. p. 496, tab. 142. fig. 4 (non Kütz.). 
E. Falklands; Berkeley Sound, Hooker. 
The name given by Hooker & Harvey was preoccupied, hence Kiitzing 
renamed the plant in his * Species Algarum.' 
