FROM THE FALKLAND ISLANDS. 189 
Islands specimen is apparently correctly named, but it may be noted that his 
Chiloe specimen is not Bostrychia but а Gelidium. 
BOSTRYCHIA INTRICATA, Mont. in С. Gay, Fl. Chilena, viii. p. 309. 
Falkland Islands, D’ Urville. 
Distris. Falkland Islands, Chile. 
Hariot notes that this species is allied to В. Hookeri, and it is possible that 
the two are synonymous. 
HETEROSIPHONIA BERKELEYI, Mont. Prodr, Phye. Antarct. p. 4. Poly- 
siphonia Davisit, Hook. f. et Нагу. in Lond. Journ. Bot. iv. (1845) р. 267; 
Fl. Ant. ii. p. 481. 
Falkland Islands, general, Hooker, Abbott, Vallentin, Hennis. 
DISTRIB. Fuegia, Falkland Islands, Kerguelen, Auckland Island. 
Var. SQUARROSA (Kütz.), Cotton, comb. nov. Polysiphonia squarrosa, Kütz. 
Spec. p. 822; De Toni, Syll. Alg. iv. p. 939, sub P. atro-rubescens. 
DisrriB. Probably same as type. 
The original specimen of P. squarrosa, Kützing, which Madame Weber 
was kind enough to lend me, shows that it is a Heterosiphonia, being the not 
uncommon squarrosely-branched plant which is usually regarded as a form 
of Н. Berkeleyi. I have little doubt that this view is correct, as several other 
sublittoral plants assume a very similar form under certain conditions. In 
reducing the plant to varietal rank Kiitzing’s name is retained, though it 
should be pointed out that the alga is in no way related to /Jeterosiphonta 
squarrosa (Hook. f. & Harv.), De Toni, from New Zealand. 
H. POLYZONIOIDES, J. Ag. Till Alg. Syst. xi. (1890) p. 73. 
E. Falklands ; Port William, coll. ? 
Disrris. Falkland Islands. 
This species (overlooked by Gain in his useful tables) was described by 
Agardh during his later years. The description agrees so well with 
H. Berkeleyi, var. squarrosa, that examination of the type will probably 
show that Н. polyzonioides is identical with this plant. 
BORNETIA ? ANTARCTICA, De Toni, Syll. Alg. iv. р. 1297. Griffithsia 
antarctica, Hook. f. её Harv. in Fl. Ant. ii. p. 488. 
E. Falklands; Port William, Berkeley Sound, Hooker ; Port Louis, 
Moseley. W. Falklands; West Point Island, Vallentin, Hennis. Dunmose 
Head, Vallentin. 
Disrris. Fuegia, Falkland Islands ; (Southern Australia ?). 
It is more than doubtful if the Australian plant belongs to this species. 
