192 FLORA ANTARCTICA. {Auckland and 



sitis pntentibus, articulis cylindraceis diametro duplo longioribus aut Eequalibus, spha>rosporis axillaribus." 

 Mont. Prodr. Phyc. Ant. p. 9. Toy. au Pole Slid, p. 90. 



Hab. Lord Auckland's group ; creeping on other Alga. (Admiral If Urville.) 



3. Caltthamnion //'uium, Hook. fil. et Harv.; caulibus mgrescentibus intertextis, primariis robustis 

 basi venosis continuis hirtis apice artieulatis, seciuidariis elongatis ramulis pinnatis quadrifariis densissime 

 vestitis, piimulis simplicibus incurvis obtusis, articulis diametro sesqui-longioribus. (Tab. LXXVIII. Eg. II.) 



Hab. Lord Auckland's group ; parasitic on other seaweeds. 



Caules esespitosi, fibris intertextis basi comitati, 2-3 unc. longi, robusti, vage quadrifariam ramosi, per totam 

 longitudincnx ramulis quadrifariis densissime velati. Rami cauli similes, longitudine vara; ramuli inferiores breves 

 caulibus habitum liirtum funalemve impertiimt, superiores longiores et phmati evaduut ; secundarii (v. plumulse) 

 pinnati, piuuis alternis erecto-patentibus elongatis obtusis incurvis, racliide flexuosa. Color atro- v. fusco-ruber. 

 Spharospora sphserica?, solitaria?, latere interiore ramidi affixae, pusillae. Substantia rigidiuscula. — Chartfe adhferet. 



In liabit 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. 



Plate LXXVIII. Fig. II — 1, a plant of the natural size; 2, branch; 3, ultimate pinnule; 4, portion of the 

 same : — magnified. 



4. Calithamxiox mierojoterwm, Hook. fil. et Harv.; parvum, erectum, caule articulato parce ramoso, 

 raniis distichis alternis circumscriptions obovatis obtusis bi-tripinnatis, pinnis alterne multifidis flexuosis, 

 pinnulis erecto-patentibus obtusis, articulis caulis ramorumque diametro 2-3-plove longioribus, ramulorum 

 diametro aquantibus, splioerosporis scssilibus solitariis cllipticis. 



Hab. Lord Auckland's group ; parasitical on Ptilota formosimma. (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 pimndis alterne multifidis ut in C. tetragono. Ramuli alterui, inferiores 

 simplices, superiores iterum divisi. Articuli pellucidi, rosei, venis destituti. SpJiarosporce minutfe, rainulis sparsa?, 

 appressfe, ellipticfe, massam quadrifidam includentes. Color pidcherrime roseus. Substantia tenera. 



This does not belong to the parasitical section of the genus typified by C. Dariesii, 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 sphasrospores, it is closely allied. 



35. CONFERVA, Agardh. 



1. Coxfeeva Pacificu, Mont., Prodr. Phijc. Antarct. p. 16. Toy. au Pole Sud, Bot. Crypt, p. 7. 



Hab. Lord Auckland's group ; on rocks in the sea, very abundant. 



Ccespites 3-4 una longi, vage fimiculari-divisi, e filis graeilibus intricatis laete virentibus compositi. Fila ramo- 



sissima ; ramis inferioribus irregulariter ramosis, ramidos radicifomies hie illic emittentibus, superioribus vage ramosis 



dichotomis v. secundis, ramulis erectis, supremis appressis elongatis strictis. Articuli partis inferioris breves, cbametro 



2-3-plove longiores, superiores sensim elongati, ramtdonun supremorum longissinii. Color lfete viridis, nitens. 



Substantia membranacea. — Chartfe adlneret. 



This species is nearly related to the C. arc/a 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 Montague in his Flora of the ' Voy. au Pole Sud.' 



