1 and 
: Campbells Islands] CRYPTOGAMIA ANTARCTICA. 67 
8. CHORDA, Stackh. 
«LY 
- Frons tubulosa, filiformis, simplex, intus transversim septata, extus filis minutis clavatis horizontalibus omnino 
à velata. Fructus: spore pyriformes filis periphericis immerse. 
e other 
۲ 1. Cnompa lomentaria, Lyngb., Hydr. Dan. p. (4. t. 18. Grev. Alg. Brit. p. 48. Hook. Br. Fl. 
vol. ii. p. 276. Harv. Br. Alg. p.35. Wyatt, Alg. Danm. no. 6. Scytosiphon Filum, var. y. Ag. Sp. Alg. 
posito- vol. i. p. 162. Ag. Syst. p. 257. C. rimosa, Mont.? Prod. Phyc. Antarct. p. 12. Voy. au Pole Sud, Bot. 
ide Crypt. p. 44. 
0. Aly. Has. Lord Auckland's group; on rocks in the sea. 
1. Dan, Radix scutata. Frons (in exemplaribus Aucklandicis) pedalis, 2 lin. lata, basi tenuissima, longe setaceo-fili- 
formis, sursum sensim latior, apicem versus subattenuata vel acuminata, remote septata, constricta, interdum sub- 
continua et equalis. Color sordide badius v. fusco-olivaceus. Superficies tota filis clavatis minutissimis sporis 
immixtis velata.—Chartze arcte adhzeret. 
n: These specimens differ slightly from the European form of the species, in having the constrictions less obvious 
and at much wider intervals. In some individuals scarcely any constriction occurs, and then it is not easy at first 
-—- sight to distinguish them from a common state of Asperococcus echinatus. In others, again, they are evident, and 
microscopical examination proves that they do not belong to Asperococeus. At the Falkland Islands this plant was 
also found, and the specimens from that locality are identical with the common European appearance. 
Ee 9. ADENOCYSTIS, Hook. fil. et Harv. 
smaller, 
h that of Radix scutata. Frons membranacea, saccata, intus cava, aqua repleta, foveis convexis opacis fila arachnoidea 
emittentibus conspersa, filis minutis clavatis omnino velata. Fructus: spore pyriformes filis periphericis immerse. 
Oss. This genus differs from .4sperococcus in having its fructification spread over the entire surface, as in 
bret Chorda, and not confined to distinct sori; and from the latter in being destitute of septa, and in possessing innumer- 
nulisque able pale depressions, composed of radiating filaments with very short coloured joints, emitting from their apices 
tufts of colourless, long, jointed, byssoid fibres. These appear afterwards to fall away, leaving depressions and often 
punctures of the membrane in their place. The tufts of arachnoid fibres do not expand well after having been 
l dried, though they may always be found in the damaged state, by carefully scraping away the surface of the frond. 
Tanacee, | 
۳ i l. ApENoovsrIS Lesson, Hook. fil. et Harv. ; Asperococcus Lessoni, Bory, in Duperrey Voy. p. 199. 
۴ Ki | t. 11. f. 2. Grev. Syn. p. xlii. Endl. Gen. Supp. vol. iii. p. 26. (Tas. LXIX. Fig. IL.) 
is ۱ Has. Lord Auckland’s group ; on rocks left by the tide, abundant. 
i, rarius Radix scutata, exigua. — Frondes 14 unc. long, 4 late, ceespitosee, e stipite setaceo-filiformi 1 lin. longo orte, 
tenuatis ellipticæ vel obovatæ, inflatæ, aqua semper repletæ, obtusissimæ, membranaceæ, vix reticulatæ, cellulis minutissimis 
T constitute, glandulis superficiariis v. subimmersis convexis dense consperse. Glandule hemispheerice, e filis minutis 
radiantibus brevissime articulatis atro-fuscis formate, fibrillas penicillatas longe articulatas hyalinas arachnoideas 
apice gerentes, demum concave. Superficies frondis filis coloratis (endochromaticis) minutissime clavatis erectis in 
1 " strato tenuissimo connexis induta. Spore obovate, nigro-fusce, limbo hyalino cinctee, per totam frondem sparsee, 
jos filis periphericis immerse, sessiles. Color fusco-olivaceus, sordidus. Substantia mollis.—Chartee adheeret. 
6 Our plant strongly resembles the Fucus saccatus of Turner, (Dumontia saccata), especially specimens from 
gne Nootka Sound; a close microscopic examination being necessary to distinguish them. Possibly the plant, alluded 
to by Turner, in his description of 7. saccatus, as having been sent to him from New Holland by Mr. Brown, and 
