Falklands, ete.| CRYPTOGAMIA ANTARCTICA. 173 
bli Dense ceespitosa. Ceespites 4-5 unc. longi, intricati.  Articuli longitudine varii, inferiores valde elongati: 
supremi brevissimi, omnes striis sex rectis spiralibusve notati, e tubulis duodecim tenuibus coloratis circa cavitatem 
centralem dispositis conflata. 
20], 
A. fine species, and evidently quite distinct from any previously described; but unfortunately so tender that it 
cannot be removed from the paper without breaking ; for which reason our description of the ramification is not so 
te rigide, mud perfect as is desirable. It differs, in the substance especially, from the British Polysiphonia atro-rub , being 
€ basi regular more fragile and tender. 
m Color ig PravE CLXXXII. Fig. II.—4. and B. different states of P. anisogona ; 1, ramulus ز‎ 2, apex of ditto ; 3, trans- 
verse section of ditto :—all magnified. 
mus Gru : 
: 4. Potysrenonta tenuistriata, Hook. fil. et Harv.; rubescens, articulata, multistriata, frondibus gra- 
cillimis capillaceis flaccidis elongatis circumscriptione ovato-lanceolatis, caule primario subsimplici flexuoso 
alterne irregulariter dichotome ramoso, ramis remotis circumscriptione ovatis ramulisque erecto-patentibus 
T sensim attenuatis apice fibrillosis, axillis acutis, articulis: ramorum diametro multiplo, ramulorum duplo 
triplove longioribus sex-striatis e tubulis duodecim tenuissimis radiantibus coloratis formatis, geniculis 
incrassatis, Nobis in Lond. Journ. Bot. vol.iv. p. 266. (Tas, CLXXXII. Fig. ILL.) 
Haz. Hermite Island, Cape Horn; dredged up in about six fathom water. 
hau Basis frondis deest. ‘Caulis primarius solitarius? 4-6 unc. longus, capillaris, flexuosus, alterne ramosus. 
ri e Rami 2-3-unciales, ramulique tenuissimi. : 
A very elegant species, allied to P. anisogona, but much more slender, very differently branched, and not fragile 
when moistened after being once dried. 
PrATE OLXXXIII. Fig. III.—1, plant of the natural size ; 2, branch and ramulus ; 3, ramulus ; 4, transverse 
section of ditto :— magnified. 
attenuato, mmi 5. PoLysIPHONIA Sulivane, Hook. fil. et Harv.; pusilla, badia, articulata, flaccida, multistriata, fron- 
atentas alli dibus flabellatim ramosis, ramis alterne decompositis fastigiatis, ramulis sparsis alternis subulatis simplicibus 
an de subquadrifariis, articulis ramorum diametro subduplo, ramulorum sesquilongioribus omnibus e tubulis 
duodecim angustis radiantibus formatis. (Tas. CLXXXII. Fig. IV. 
| 5 5 
Has. Falkland Islands; Mrs. Capt. Sulivan. 
. Radix? Frondes ceespitosee, 1 unc. longe, e basi valde fastigiatim ramos®, flabellatim expanse. Caulis 
ne suai p 8 8 P 
se jin isi primarius brevissimus, ramos plurimos capillares repetitim divisos fasciculatos emittens, rami penultimi subpectinati, 
w— ultimi curvati patentes, axillis obtusiusculis, supremi ramos ramulosque terminantes arcte incurvi sese invicem amplec- 
| tentes, apices frondium hinc nodosi v. incrassati apparent. Color badius. Substantia flaccida, tenax :— chartæ 
"d | adhzeret. 3 
nh | A pretty but small species, allied to the Auckland Islands P. ceratoclada, Mont., but slenderer; with the stem 
formed of a greater number of tubes, more flaccid, &e. The ultimate ramuli are longer in proportion than those 
upiíd. | they spring from, they are slender, patent, rather uniform in length, and curve upwards, hence giving a somewhat 
هب‎ . pectinated appearance to the ultimate divisions of the frond. The hue, which is pale brown in this specimen, may 
lins po be somewhat faded, and here and there shows indications of the plant having been originally rose coloured, 
lise "m Prate CLXXXII. Fig. IV.—1, branch and ramuli; 2, apex of branch :—both magnified. 
Ato 
i ex nt 6. PoLYsIpHoNIA microcarpa, Hook. fil. et Harv. ; atro-rubescens, ceespitosa, frondibus tenuissimis 
bis in Jo capillaribus membranaceis flaccidis tenacibus oligosiphoniis 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, 
