80 CRYPTOGAMIA ANTARCTICA, [Auckland and 
sitis patentibus, articulis cylindraceis diametro duplo longioribus aut «equalibus, spheerosporis axillaribus." 
Mont. Prodr. Phye. Ant. p. 9. Voy. au Pole Sud, p. 90. 
Has. Lord Auckland’s group; creeping on other Alge. (Admiral D Urville.) 
3. CALITHAMNION Žirtum, Hook. fil. et Harv.; caulibus nigrescentibus intertextis, primariis robustis 
basi venosis continuis hirtis apice articulatis, secundariis elongatis ramulis pinnatis quadrifariis densissime 
vestitis, pinnulis simplicibus incurvis obtusis, articulis diametro sesqui-longioribus. (Tas. LX X VIII. Fig. II.) 
Has. Lord Auckland’s group; parasitic on other seaweeds. 
Caules cespitosi, fibris intertextis basi comitati, 2-3 unc. longi, robusti, vage quadrifariam ramosi, per totam 
longitudinem ramulis quadrifariis densissime velati. Rami cauli similes, longitudine varii; ramuli inferiores breves 
caulibus habitum hirtum funalemve impertiunt, superiores longiores et pinnati evadunt; secundarii (v. plumule) 
pinnati, pinnis alternis erecto-patentibus elongatis obtusis incurvis, rachide flexuosa. Color atro- v. fusco-ruber. 
Spherospore spherice, solitariz, latere interiore ramuli affixe, pusille. Substantia rigidiuscula.—Charte adheeret. 
In habit this approaches the C. tetricum, but after a careful comparison both with that and with C. Arbuscula, 
which it also resembles, we are convinced that it is distinct from either. The plumules are very different from those 
of the former species and larger than in the latter. It is not likely to be confounded with any other species. 
Pirate LXXVIII. Fig. II—1, a plant of the natural size; 2, branch; 3, ultimate pinnule; 4, portion of the 
same :— magnified. 
4. CALITHAMNION micropterum, Hook. fil. et Harv.; parvum, erectum, caule articulato parce ramoso, 
ramis distichis alternis circumscriptione obovatis obtusis bi-tripinnatis, pinnis alterne multifidis flexuosis, 
pinnulis erecto-patentibus obtusis, articulis caulis ramorumque diametro 2-3-plove longioribus, ramulorum 
diametro aquantibus, spheerosporis sessilibus solitariis ellipticis. 
Has. Lord Auckland's group; parasitical on Ptilota formosissima. (Dr. Lyall.) 
Radix scutata. Caulis subsolitarius, 2-3 lin. longus, erectus, parce distiche et alterne divisus. Rami basi pinnis 
simplicibus ornati, superne bi-tripinnati, nunc pinnulis alterne multifidis ut in C. tetragono. Ramuli alterni, inferiores 
simplices, superiores iterum divisi. Articuli pellucidi, rosei, venis destituti. Spherospore minute, ramulis sparse, 
appresse, ellipticee, massam quadrifidam includentes. Color pulcherrime roseus. Substantia tenera. 
This does not belong to the parasitical section of the genus typified by C. Daviesii, but rather resembles some 
of the larger species, as C. tetragonum, to which, in the form of the joints, the disposition, shape and relative size of 
the spheerospores, it is closely allied. 
35. CONFERVA, Agardh. 
1. Conrerva Pacifica, Mont., Prodr. Phyc. Antarct. p. 16. Voy. au Pole Sud, Bot. Crypt. p. 7. 
Has. Lord Auckland’s group; on rocks in the sea, very abundant. 
Cespites 3-4 unc. longi, vage funiculari-divisi, e filis gracilibus intricatis lete virentibus compositi. Fila ramo- 
sissima ; ramis inferioribus irregulariter ramosis, ramulos radiciformes hic illic emittentibus, superioribus vage ramosis 
dichotomis v. secundis, ramulis erectis, supremis appressis elongatis strictis. Artieuli partis inferioris breves, diametro 
2-3-plove longiores, superiores sensim elongati, ramulorum supremorum longissimi. Color lete viridis, nitens. 
Substantia membranacea.—Charte adhzeret. 
This species is nearly related to the C. arcta of Europe, to some varieties of which, especially that called 
C. centralis, it bears a very close resemblance. 
The C. virgata, Ag., is enumerated by Montagne in his Flora of the * Voy. au Pole Sud.’ 
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