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Falklands, ete.) CRYPTOGAMIA ANTARCTICA. 181 
32. NOTHOGENIA, Mont. 
1. NoTHoGENIA variolosa, Mont, | F7. Antarct. Pt. 1, p, 188. 
Has. Hermite Island, Cape Horn; the Falkland Islands; and Christmas Harbour, Kerguelen's Land ; 
on rocks, very abundant. 
An exceedingly variable plant in size and in the breadth of its fronds, simulating in the high southern latitudes 
the Chondrus crispus, as far as locality and abundance are concerned, The southern species representing our Chondrus 
crispus is the C. tuberculatus in Lord Auckland’s Group, (where the Nothogenia also abounds,) and at the Cape of 
Good Hope the C. dilatatus. 
33. DUMONTIA, Lama. 
1. Dumont filiformis, Grev. Fl. Antaret. Pt. 1. p. 189. 
Haz. Berkeley Sound, Falkland Islands ; rare. 
Apparently identical with the European plant, which ranges from the Mediterranean to the British coasts. 
34. GIGARTINA, Lame. 
1. G1GARTINA plicata, Grev. Alg. Brit. p.15. Fucus plicatus, Engl. Bot. t. 1089. 
Haz. Cape Pembroke, Falkland Islands; Christmas Harbour, Kerguelen’s Land; abundant. 
These examples so entirely accord with others of British growth, that it is unnecessary to separate them spe- 
fically. No specimens considered by any systematic botanist to belong to this Gigartina have been found between 
the latitudes of the south of Europe and Kerguelen’s Land, except (according to Montagne) at Callao: yet the 
genus, under one or other of its Protean aspects, abounds throughout all tropical and temperate seas. 
35. PTILOTA, 4y. 
1. Pritota Harveyi, Hook. fil.; caule compresso cartilagineo inarticulato anguste lineari furcato inor- 
dinateve ramosissimo, ramis distichis pinnatim decomposito-ramosis majoribus minoribusque pectinatim pinnu- 
latis costa articulata percursis, pinnulis creberrimis simplicibus articulatis monosiphoniis abbreviatis subulatis 
oppositis, pinnularum articulis quadratis, favellis: in ramulos terminalibus ramellis pinnatis involueratis, 
tetrasporis ad apices pinnularum aggregatis nudis breve pedicellatis. Hook. fil. ix Lond. Journ. Bot. 
vol.iv. p. 271. (Tas. CLXXXVII.) : 
Var. 8. pinnulis subdistantibus. 
Has. Hermite Island, Cape Horn, and on the outer coasts of the Falkland Islands; abundant. 
Species pulcherrima, prima visu P. plumose referenda, sed distinctissima. rons 8 unc. ad pedalem, e ramis 
patulis ejusdem latitudinis. Stipes gracilis, 4 lin. diametro, et per totam frondem equilatus, irregulariter furcatim 
v. dichotome v. sub-pinnatim ramosissimus. Rami minores majoresque (juniores precipue) ramulis ereberrimis articu- 
latis 1 lin. longis pulcherrime pectinati. Ramuli simplices, serie unica cellularum quadratarum endochromate 
roseo repletarum constantes, ramis Callithamnio subsimiles. 
'This lovely plant is the Cape Horn and Falkland Island representative of the Boreal and Arctic P. sericea, 
Harv. (P. elegans, Kutz., Fucus sericeus, Gmel.) and of the Auckland Island P. formosissima, (t. LXXVIL) From 
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