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478 F LO EA ANTAEC TICA . [Fuegia, the
2. Gracilaria (?) aggregata, Hook. fil. et Harv. ; cæspitosa, nigrescens, frondibus fastigiatis e basi
communi late scutata carnosa ortis plurimis filiformibus, primariis cylindraceis cartilagineis vage subdicliotome
ramosis, axillis angustis, ramis erectis simplicibus furcatisve omnibus compresso-cylindraceis filiformibus
superne subfastigiatis apicibus obtusis, f r u c tu ? Nobis in Lond. Journ. Bo t. vol. iv. p. 2 6 1 .
H a b . Falkland Islan d s; on rocks in Berkeley Sound, B r . Lgall.
Frondes 3-4 imc. altæ, vix lin. diametro, e basi scutata, ^ unc. latæ, dense fastigiatæ, siccitate rigidæ, madore
cartilagineæ, irregulariter superne præcipue ramosæ, basi cylindraceæ, interdum simpbces, nmic e basi regulariter
dichotome ramosæ. Rami omnes erecti, axillis angustis, sinubus obtusiuscubs, ultimi paiüo latiores. Color nigro-
purpm-ascens, siccitate ater ;—chartæ non adhæret. Habitu Polgidis rotiindi.
Of this, again, we have seen no fruit ; but the structure of the frond is exactly that of the genus Gracilaria, to
which we consequently refer it.
2 3 . POLY S IPH O N IA , Gr&v.
Ì . P olysiphonia atro-ruòescens, Grev. Harv. in B r it .F l. vol. ii. p. 3 3 1 .
H a b . Berkeley Sound, Falkland Islands ; scarce.
Only a few specimens of this species, and in an immature state, were procured : they very closely approach
British ones in structure, but ai-e, perhaps, more branched ; though we can detect no specific differences between
them. They differ from the following species in substance and iu wantmg the fibrillous apices of the ramuli ; the latter,
however, is an unimportant character.
The species ranges from the Mediten-anean Sea to the coasts of Scotland.
2. VoLYSiPnoisU./usco-ruòens, H o o k .fil.e t Harv.; atro-rubescens, obsicure articulata, rigidiuscula,
multistriata, frondibus irregulariter dichotomis, caule angulatim flexuoso gi-acbi sensbn attenuato, ramis
majoribus dichotomis, mmoribus alternis strictis elongatis, ramubs paucis subulatis erecto-patentibus, axillis
primarbs patentibi^ secundariis acutis, articubs e tububs octo radiantibus coloratis formatis, ramorum diametro
duplo-triplo-quadruplove, ramulorum sesquilongioribus. (T a b . CLX X XII. Fig. I.)
H a b . Falkland Islands ; Mrs. Co]
Caules primai-ii ramosissimi, fasciculati, 6-8-unciaIes, graciles, filiformes, basi nudi, superne sub-angulatira
fiexuosi, ad angulos ramos 2 unc. longos emittentes, rigidub. Rami ramulique erecto-patentes, laxe pluries divisi,
fasciculati, ultimi longitudine varii, 1 -2 lin. longi, elongati v. subulati, omnes rigidiusculi. Color atro-rubescens :—
chai'tæ laxe adhæret.
Very similar indeed to the F. atro-rubescens, but differing in the flexuose stem; also allied to P. anisogona,
nob,, but of a totally different texture and consistence.
Plate CLXXXII. Fig. I.—1, ramub ; 2, apex of ditto ; 3, transverse section of ditto :—all magnijied.
3. P olysiphonia anisogona. Hook, fil.et Harv.; atro-rubescens, flaccida, madore fragiUima, frondibus
cæspitosis bregulariter ramosissimis equabbus setaceis articulatis vis attenuatis, ramis ramulisque alternis
subdichotomisye erectis v. appressis, axbbs angustissimis, articulis variis inferioribus diametro sextuplo,
superioribus duplo triplove longioribus, ultimis sesquilongioribus v. quadratis, omnibus strbs sex notatis c
tububs duodecim tenuibus radiantibus endochromate repletis formatis, ce ramidbs ? Nobis in Loud.
Journ. Bot. vol. iv. p. 268. (Tab . CLX X X II. Pig. II.)
H a b . Hermite Island, Cape Horn, and th e Falkland Islan d s; not common.
Falklands, etcì]
Dense cæspitosa.
F LO EA ANTAECTICA, 4 1 9
¿fes 4-6 uno. longi, intricati. Articuli longitudine varii. inferiores valde elongati.
supremi brevissimi, omnes ¡trüs sex reotis spiralibusve notati, o tubulis duodecim tenuibus coloratis circa cavitatem
centralem dispositis conflata.
A fine species, and evidently quite distinct from any previously described; but unfortmiately so tender tbat it
cannot be removed from the paper without breaking ; for whicb reason our description of the ramification is uot so
perfect as is desirable. It differs, in the substance especially, from the British Pohjripkonia, atro-ruiescem, being
more fragile and tender.
P l-ITE CLXXXII. Fig. II.— A. and 3 . different states of F. anisogona ; 1, ramulus ; 8. apex of ditto ; 3, transverse
section of ditto ;—all magnifed.
i . P olysiphonia tennistriata, Hook. fil. et Harv.; rubescens, articulata, midtistriata, frondibus gra-
ciUimis capillaceis flaccidis elongatis circumscriptione ovato-lanceolatis, caule primario subsimplici flexuoso
alterne irregulariter dichotome ramoso, ramis remotis circumscriptione ovatis ramulisque erecto-patentibus
sensiin attenuatis apice fibrillosis, axiflis acutis, articulis ramorum diametro multiplo, ramulorum duplo
triplove longioribus sex-striatis e tubulis duodecim tenuissimis radiantibus coloratis formatis, gemcubs
incrassatis. Nobis in Lond. Journ. Bot. vol. iv. p. 266. (Tab. C LX X X II. Pig. I I I .)
H ab . Hermite Island, Cape Horn ; dredged up in about six fathom water.
Basis froudis deest. Caulis primarius solitarius? 4 -6 unc. longus, capillaris, flexuosus, alterne ramosus.
Rami 2-3-nnciales, ramulique tenibssimi.
A very elegant species, allied to P. anisogona, but mnch more slender, very differently branched, and not fragile
when moistened after being once di-ied.
P late CLXXXIII. Fig. H I.—1, plant of the natural size ; 2, branch and ramulus ; 3, ramulus ; 4, transverse
section of ditto :—magnijied.
5. PoLYSiBHONLA Sulwanoe, Hook. fil. et Harv.; pusilla, badia, articulata, flaccida, multistriata, iron-
dibus flabellatim ramosis, ramis alterne decompositis fastigiatis, ramulis sparsis alternis subulatis simphcibus
subquadrifariis, aiticuhs ramorum diametro subduplo, ramulorum sesqmlongioribus omnibus e tubulis
duodecim angustis radiantibus formatis. (Tab . CLX X X II. Pig. IV.)
I I a b . Falkland Islands ; Mrs. Capt. Sulivan.
Eadix.? Frondes cæspitosæ, 1 une. longæ, e basi valde fastigiatim ramosæ, flabellatim expansæ. Caulis
primarius brevissimus, ramos plm-imos capillares repetitim divisos fasciculatos emittens, rami penultbni subpectinati,
ultimi cm-vati patentes, axillis obtusiusculis, supremi ramos ramulosque terminautes arete incm-vi sese invicem amplec-
tentcs, apices frondium hinc nodosi v. incrassati apparent. Color badius. Substantia flaccida, tenax chartæ
adhæret.
A pretty but small species, allied to the Auckland Islands P. ceratoclada, Mont., but slenderer ; with the stem
formed of a gi-eater number of tubes, more flaccid, &c. The ultbnate ramub are longer in proportion than those
they spring from, they are slender, patent, rather uniform in length, and curve upwai-ds, hence giving a somewhat
pectinated appearance to the ultimate dirisions of tbe frond. The hue, which is pale brown in tlbs specimen, may
be somewhat faded, and here and there shows indications of the plant having been originally rose coloured.
P late CLXXXII. Flg. IV.—1, branch and ramuli ; 2, apex of branch :—both magnijied.
G. P olysiphonia microcarpa. Hook. fil. et Harv. ; atro-rubescens, cæspitosa, fr-ondibus tenuissimis
capillaribus membranaceis flaccidis tenacibus obgosiplioniis equalibus vix attenuatis irregulariter repetitim
dichotomis, ramis ramulisque erecto-patentibus crebre divisis, articulis bistriatis e tubulis quatuor formatis,
ramorum majorum diametro multiplo, minorum triplo quadruplove, ramulorum sesqui duplove longioribus.