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Campbells Islands.] CRYPTOGAMIA ANTARCTICA. 71 
Has. Lord Auckland's group; on the roots and stems of sea-weeds. 
Caulis 4-8 unc. longus, setam porcinam diam. «equans, sursum attenuatus, subangulatim flexuosus, vage ramo- 
sus, nunc subsimplex, ramis lateralibus instructus, nunc e parte inferiore subdichotome divisus, articulatus, Rami 
inferiores longiores, superiores sensim abbreviati, simplices v. ramosi, patentes v. divaricati; ramulis abbreviatis, fla- 
bellatis, dichotomis, patentissimis, laxe quadrifariam insertis, ultimis subulatis divaricatis v. recurvis. Artieuli 
caulis et ramorum majorum diam. 3—4-plo longiores, 4—5-striati, medio pellucide coccinei v. punicei, ad geniculos 
cellulis minutis superficialibus donati hinc opaci; ramulorum diam. vix longiores v. «equales, 2—3-striati. Siphones 
in ramis majoribus novem, tubulum centralem amplum radiatim cingentes, cellulis externis nullis; caules -hinc 
sulcati. Ceramidia non visa.  Sfichidia lanceolata, spheerosporas magnas quadripartitas pluriseriatas includentia. 
Substantia tenera.—Charte adheeret. 
Slightly variable in some minor characters, yet a distinctly marked and easily recognized species. Main branches 
irregular, being imperfectly dichotomous or having a simple stem furnished with lateral branches. The most striking 
specific character consists in the dichotomously multifid fan-like ramuli, which are set rather laxly along the branches. 
We have not seen ceramidia; several of our specimens produce stichidia, of the shape described by Montagne; but 
the spheerospores are in a double and occasionally a triple row, as in Dasya. In one individual, the ceramidia are 
replaced (by disease) with a cluster of spheerical bodies, forming a mass which resembles the favella of a Callitham- 
nion, and, from which, fascicles of ramuli are given off in a proliferous manner. These call to mind the capsules of 
P. botryocarpa, and though their structure be very irregular, they suggest a doubt whether the remarkable fructifi- 
cation of the latter plant is not abnormal. 
5. PoLYsIPHONIA rudis, Hook. fil. et Harv. ; pusilla, filis ceespitosis rigidis tenacibus gracilibus subfas- 
tigiatis ramosis, ramis alternis apicem versus crebrioribus inferioribus filiformibus nudis elongatis superio- 
ribus basi nudis apice pinnatis, pinnulis subulatis elongatis erectis, articulis ramorum diametro 2-3-plo 
ramulorum sesqui-longioribus 3—4-striatis. (Tas. LX XIV. Fig. IL.) 
Has. Lord Auckland’s group; parasitic on larger ۰ 
Caules dense ceespitosi, e filis intertextis orti, 1-14 unc. longi, siccitate rigidi, madore tenaces, atro-fusci, vix 
rubescentes, indivisi. Rami inferiores erecti, elongati, simplices, filiformes, nudi; superiores sensim breviores, apices 
versus breviores, inferne nudi, superne pinnati, pinnis subulatis erectis inferioribus longioribus, hinc ramulis corym- 
bosis. Cirewmscriptio ramorum obovata. Articuli per totam plantam manifesti, ramorum diametro 2—3-plo longi- 
oribus pauci-striatis, ramulorum sesqui-longioribus. 
Prare LXXIV. Fig. IL.—1, a specimen of the natural size; 2, lower portion of branch and stichidia ; 3, upper 
ditto; 4, a stichidium ; 5, spheerospores :—magnified. 
6. POLYSIPHONIA ceratoclada, Mont. ; filo primario repente, caulibus erectis compressis indivisis demum 
ramos alternos emittentibus, ramis ramulisque brevibus subulatis patentissimis v. recurvis vestitis, ceramidiis 
sessilibus ovatis suburceolatisve, articulis brevissimis. P. ceratoclada, Mont. Prodr. Phyc. Ant. p. 6. Voy. 
au Pole Sud, Bot. Crypt. p. 130. t. 5. f. 2. (Tas. LXXVI. Fig. IL.) i - 
Var. 8, secundata; ramis incurvis, ramulis plerumque secundis. 
Has. Lord Auckland’s group; both varieties generally parasitical on Laurencia pinnatifida. 
Tota ramulis subulatis obsita.  Cawles e filis repentibus Alyas alias infestantibus, erecti, 1-4 unc. alti, com- 
pressi, in exemplaribus minoribus simplices, in majoribus ramis alternis cauli similibus donati. Ceramidia solitaria, 
ovata, lateralia, sessilia. Stichidia subulata, attenuata, spheerosporas uniseriatas foventia. Substantia rigidula. 
Color fusco-ruber.—Chartz laxe adheeret. 
The habit of this plant is precisely that of a Polyzonia; Montagne's specimens are in a young state, in which 
