Falklands, etc.) ORYPTOGAMIA ANTARCTICA. 147 
preserved in spirits, as to be scarcely recognizable. I had, at first, on examining dried specimens of Cyttaria 
Gunnii, fancied that I had made some mistake in the analysis given in my paper in the 19th volume of the Linnean 
Transactions. The fact is, that when a very thin slice of the dried plant is placed on the field of the microscope, the 
gelatinous coat of the threads of which it is composed becomes visible; while in the plant preserved in spirits, the 
jelly seems to form one common mass in which the central tube alone is exhibited, and when the plexus of filaments 
is drawn out with the point of a lancet, they appear far less curled than they do im situ. Perfect sporidia have not 
at present been observed in any species.* 
PrarE CLXII. Fig. 1.—1, Cyttaria Hookeri, Berk., of the natural size, on a living twig of Fagus Antarctica ; 
2, vertical, and 3, transverse sections of a single plant, of the natural size; 4, asci and paraphyses ; 5, curious 
state of asci; 6, part of the tissue from the darker part of a specimen preserved in alcohol; 7, ditto from lighter 
part artificially extended ; 8, portion of intercellular tissue of Cyttaria Gunnii as seen in a dry specimen; (the same 
structure is found in dry specimens of Cyttaria Hookeri, and in Cyttaria Darwinii, after it has been preserved in 
alcohol and dried for the Herbarium) ; 9, horizontal slice from portion of bark nearest to the wood, in-a part of a 
twig not externally attacked by Cyttaria, to show the mycelium penetrating the cells; 10, slice of fructifying disc, 
showing two sorts of tissue of the bark, interrupted by a cavity which is traversed by mycelium; 11, slice of bark 
infested with mycelium ; 12, slice from the outer surface of the wood; 18, section through a fructifying disc, showing 
fissures radiating from wood through the spongy portion of the bark, which is greatly increased in volume, and also 
a cavity traversed by mycelium parallel to the cuticle. The lower portion of the fungus penetrates in this case to 
the wood; occasionally, however, it does not penetrate quite so far :—all the above figures, with the exception of 
the first two, are more or less magnified. 
18. ASTERINA, Zé». 
1. ASTERINA pelliculosa, Berk.; effusa, tenuissima, peritheciis punctiformibus depressis atro-fuscis in 
mycelio fusco a matrice solubili sparsis. (Tas. CLXIV. Fig. I.) 
Has. Chonos Archipelago; on leaves of an Eugenia; C. Darwin, Esq. 
Amphigena, atro-fusca ; macule irregulares, varie effusee punctiformesque, e fibrillis radiantibus intertextis 
ramis patentissimis formatee, demum e matrice solubiles ; interstitiis seepe strato celluloso tenuissimo repletis. 
I have not detected fructification ; but the species certainly belongs to the genus Asterina, which is very properly 
separated from Dothidea by Léveillé. The cells of which the perithecium is composed are elongated, but very irre- 
gular, and I find similar cells often filling up the interstices left by the crossing of the radiating threads. Sometimes 
the mycelium is very obscure and the species then assumes quite a different appearance, the fructifying cells ee 
dominating and the patches presenting merely a brown stain studded with darker specks. 
Prats CLXIV. Fig. 1.—1, leaves of Eugenia, with Asterina pelliculosa, Berk., of the natural size; 2, part of 
perithecium seen from the under side ; 3, filaments of mycelium :—highly magnified. 
2. ASTERINA stietica, Berk.; minutissima, omnino punctiformis, mycelio obscuro, peritheciis depressis 
atro-fuscis margine membranaceo pellucido. (Tas. CLXIV. Fig. IV.) 
* The Tasmanian species, of which I have seen dried specimens only, differs from Oyttaria Darwinii in the 
total absence of the granulations at the base of the receptacle. It may be characterized,— 
CvrrARIA Guunii, Berk.; receptaculo subgloboso demum cayo, basi non primum distincte stipitiformi nec 
scabra, cupulis parvis. 
Has. Tasmania; on Fagus Cunninghamii, R. ©. Gunn, Esq. 
The specimens are hollow when dry. T cannot say whether such is also the case in Cyttaria Darwinii. 
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