Campbell's Islands.] FLORA ANTARCTICA. 175 



10. ANTENNARIA, Link. 



1. Antennaria scoriadea, Berk.; spongiosa, floccis fasciculatis sursum lateraliter connexis, peridiis 

 subellipticis irregularibus. (Tab. LXVII. Fig. III.) 



Hab. Lord Auckland's group and Campbell's Island ; on the branches and twigs of several shrubs and 

 trees, but especially of Dracophyllum longifolium. 



Spongiosa, ramos incrustans. Flocci \-\ una longi, fasciculati, superne processibus brevibus lateralibus more 

 Zygnematis connexi, subtus e membrana reticulata vel mycelio repente nascenti, filamentis tenuioribus immixti, erecti, 

 irregulariter ramosi. Articuli moniliformes vel praesertmi in filamentis ultimis continui, laeves, nucleo globoso so- 

 litario. Perithecia subelliptica, irregularia. 



A very singular substance, which must strike the traveller through the woods especially of New Zealand or of 

 Lord Auckland's group, in both which localities it is very abundant, resembling charcoal, and sometimes so widely 

 diffused that the branches look as if burnt. The colonists of the former islands call it " the black moss." Distin- 

 guished from A. pannosa and A. Robiimonii by its long fasciculate threads, giving it exactly the habit of Scorias 

 spongiosa. The finest specimens have a rigid bristly appearance, quite different from that of any other species of 

 the genus. This has been also gathered in Valparaiso by Mr. Bridges, and at the Swan River by Mr. Drummond. 

 I have not been able to trace the developement of the peridia in the Auckland Island specimens, but it would ap- 

 pear that, as in M. Robinsouii, M. and B., they arise either from a swollen articulation or from a process given off by an 

 articulation, in either case they are dependent on a simple metamorphosis of the latter. 



Plate LXVII. Fig. III. — 1, a plant of the natural size ; 2, flocci from the base of the tufts, with a portion of 

 the cellular matrix ; 3, flocci from the summits of the tufts, laterally aggregated ; 4, sporangia ; 5, portions of the 

 filaments in various states : — all more or less highly magnified. 



11. SCLEROTTUM, Tod. 



1. Sclerotium durum, Pers. Synops. Fung. p. 121. 



Hab. Lord Auckland's group ; on the capsules of Gentiana concinna. 



This production is enumerated here because it has hitherto appeared in the works of Mycologists, but I am 

 decidedly of Leveille's opinion that it should be expunged. 



XXXVI. ALGJE, L. 



By W. H. Harvey, Esq., M.D., and J. D. Hooker. 



1. MARGIN ARIA, A. Rich. 



Radix ramosa. Frons plana, linearis, sursum flabellato-pinnata ; pinnis coriaceo-membranaceis, spinuloso-denta- 

 tis, enerviis, dichotome fissis ; margiue superiore vesiculas petiolatas receptaculaque gerente. Conceptacula recep- 

 tacubs semi-immersa, globosa, poro pertusa. " Sports magnae, obovato-pyriformes, perisporio initio inclusae, mox 

 nudse, e cellulis parietabbus oriundaj, paraphysibus immixtse, in M. Boryana vero e morphosi idtimi articuli filoruni 

 ut videtur ortse, forsan hinc minutae et tautum ut gemma? habendas." — Mont. 



Obs. The genera Marginaria, A. Rich., Carpophyllum, Grev., Scytothalia, Grev., and Seirococcus, Grev., are all 

 very closely related to each other, and to Sargaasum. From the latter they differ more by possessing a frondose, 

 imperfectly leafy mode of growth, than by any very decided structural character ; and habit alone will scarcely se- 

 parate some of them from the decurrent species of that genus, S. decurrens, Feronii, Boryi, &c. These last have 



