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H a b . Lord Auckland’s group ; on the leaves of Panax simplex, Forst.
Macula omnino superficiales, orbiculares, epiphyllæ, 2 lin. latæ, opacæ, olivaceo-nigræ, Liclienem parvmn Fu-
cumve referentes, lobatæ, lobis apice dilatatis e filamentis approximatis constantibus.
This pretty species, which was unfortunately not found in fruit, resembles somewhat RJiytisma quercinum,
Rudolph, for which I am indebted to Dr. Montagne. That species, however, originates beneath the cuticle, while
this is, I believe, entirely superficial. The ramification is different, the tips of the branches being dilated in a fia-
bellate form. The stroma, also, consists of approximated threads, not of an irregular cellular membrane. This structure
is almost identical with that of Myrionemapunctiforine, Harv., except that the filaments are there much branched,
which I do not find to be the case here.
This species is accompanied with another in a very imperfect state, and which may be a species of Dothidea.
P late LXVIII. Fig. VII.—1, leaf of Panax, with fungus, of the natural size ; 2, portion of the same, magnified
; 3, filaments, very highly magnified.
8. HYSTE EIUM, Tod.
1. H y st e s ium breve. Berk.; perithecüs brevibus eUipticis nigris prominulis, rima angustissima, ascis
linearibus elongatis. (Tab. L X V III. Fig. V I I I .)
H a b . Campbell’s Islan d ; o n tb e dead leaves o f Uncinia HooJceri, Boott.
Peritkeda minuta, nigra, nitida, prominula, breviter elbptica, raro utrinque apiculata, rima angustissima. Asci
elongati, lineares, paraphysibus filiformibus rectiusculis immixti, sporidiis fUiformibus.
This species is manifestly different from the smab form of H. culmigenum, and the nature of the asci and paraphyses
are further distinct, being in the latter plant shorter and of a different form, with the apices of the paraphyses
curved or curled. The apiculate extremities may not prove to be a constant character, though the probability is that
it will, at least in fuU grown specimens.
P late LXVIII. Fig. V III.—1, leaf and fungus of the natural size; 2, portion of the same; 8, perithecium
shewing the contained asci ; 4, ascus ; ab more or less i.
9. AYLOGEAPHUM,
1. A ylogbaphtim Bromi, Berk.; peritbeciis simpbcibus fills arachnoideis comitatis, sporidiis oblongis
uniseptatis medio constrictis. (Ta b . L X V III. Fig. IX.)
H a b . Lord Auckland’s group ; on tbe leaves of Bromus antarcticus.
Mycelium arachnoideum, fuscum, quandoque abundantius et sterile, in macubs autem fertibbus parcum. Feri-
thecia minima, oblonga, brevia, recta v. curvata, sirapbeia, atra, nitida. A sd brevissimi, obovati, tenerrimi. Sporce
octonæ, oblongo-elbpticæ, medio constrictæ, uniseptatæ.
The species of this genus, which has principaUy been investigated by Madame Libert, resemble extremely minute
OpegraphcB. The present individual approaches the A . junceum, but differs from it and from ab others by the
septate sporidia. The perithecium easily breaks up into its elemental ceUs, and such I find to be also the case with
some of Madame Libert’s species ; while, in others, the cebular structure is more permanent and forms a beautiful
microscopic object.
P late LXVIII. Fig. IX.—1, a portion of leaf and fungus, of the natural size ; 2, perithecium, t
the contained asci ; 3, ascus ; and 4, sporidia ;—highly magnified.
10. A NT ENXARIA, U n k .
1. A n t e n n a u ia scoriadea, Be rk .; spongiosa, floccis fasciculatis sursum lateraliter connexis, peridiis
subeUipticis irregularibus. (Ta b . LX V II. E g . I I I .)
H a b . Lord Auckland’s group and Campbell’s Is lan d ; on the branches and twigs of several shrubs and
trees, b u t especially of Bracophyllum longifolium.
Spongiosa, ramos incrustans. Mood ) - ) unc. longi, fasciculati, superne processibus brevibus lateralibus more
Zygnamtia connexi, subtus e membrana reticulata vel mycelio repente nasoenti, filamentis tenuioribus immixti, erecti.
irregulariter ramosi. ArtkuU moniliformes vel præsertim in filamentis ultimis continui, læves, nucleo globose so-
litario. Perithecia subelbptica, irregularia.
A very singular substance, whicb 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 caU it “ the black moss.” Distinguished
from A . pannosa and A . Bolmonii by its long fasciculate threads, giving it exactly the habit of Scoria.s
spongiosa. The finest specimens have a rigid bristly appearance, quite different from tbat of any other species of
the genus. Tlds has been also gathered in Valparaiso by Mr. Bridges, and at the Swan Eiver by Mr. Drummond.
I have not been able to trace the developement of the peridia iu the Auckland Island specimeus, but it would appear
that, as in M. Robinsonii, M. and B., they arise either from a swoUen articulation or from a process given off by an
articulation, in either case they are dependent on a simple metamorphosis of the latter.
P l a t e LXVII. Mg. III.—1, a plant of the natural size ; 3, flocoi from the base of the tnfts, with a portion of
the cellular matrix; 3, flocci fr-om the summits of the tufts, laterally aggregated; 4, sporangia; 5, portions of the
filaments in various states ;—all more or less I
11. SCLEEOTIUM, Tod.
1. ScLEBOTica durum, Pers. Synops. Fung. p. 121.
H a b . Lord Auckland’s group ; on tb e capsules of Gentiana concinna.
This production is enumerated here because it has hitherto appeared in the works of Mycologists, but I am
decidedly of LeveiUe’s opinion that it should be expunged.
XXXVI. ALGÆ, L.
By W. H. H ahvey, Esa., M.D., and J. D. H ooker.
1. ILV EG IN AS IA , A. Rich.
Radix i-amosa. Frons plana, bnearis, sursum flabcEato-pinnata ; pinnis coriaceo-membranaceis, spinuloso-denta-
tis, enerviis, dicbotome fissis ; margine superiore vesículas petiolatas receptaculaque gerente. Conceptacula recep-
taculis semi-immersa, globosa, poro pei-tusa. " Sporæ magnæ, obovato-pyriformes, perisporio initio inclusæ, mox
nudæ, e ceUubs parietalibus oriundæ, paraphysibus immixtæ, in M. Boryana vero e morphosi ultimi articuli filorum
u t videtur oi-tæ, forsan hinc minutæ et tantum ut gemmæ habendæ.”—Mont.
Obs. The genera Marginarla, A. Eich., Carpophylhm, Grev., Scytothalia, Grev., and Seirococcus, Grev., are aU
very closely related to each other, and to Sargassutn. From the latter they differ more by possessing a frondose,
imperfectly leafy mode of gi-owth, than by any very decided structural character ; and habit alone will scai-cely separate
some of them from the decmnent species of that genus, S. decurrens, Peronii, Boryi, &c. These last have
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