REV. M. J. BERKELEY ON SOME NEW FUNGI. 131 
5. MESOPHELLIA, nov. gen. (Tas. XXV. C.) 
Peridium crassum, coriaceum, substratosum ; capillitium fasciculato-anastomosans, ad columellam cen- 
tralem suberosam liberam radians ; flocci subflexuosi; sporæ breviter fusiformes utrinque obtusius- 
culæ.—Genus Cyclodermati, Klotzsch, affine ; species hypogææ. 
M. ARENARIA, Berk, 
From 3-1 inch across, elliptic, somewhat depressed, subterraneous, clothed externally 
with white flocci which attach themselves to little grains of sand. After the external 
down has become exolete, dark branched veins are seen to run over the peridium, without 
however giving off free threads, as in Hysteromyces. Peridium single, coriaceous, appa- 
rently consisting of several compacted strata like wasp pasteboard; flocci pinkish-grey, 
radiating in little fascicles from the peridium to the large central corky columella, which 
is either entirely free, or attached by one or more tendinous threads; spores fusiform, 
short, slightly obtuse at either end, 5545 of an inch long, of the same colour as the flocci. 
This genus approaches close to Cycloderma, Klotzsch, which appears to have been seen 
by no other botanist ; but there is no inner peridium, the columella is not a prolongation 
of a stem, and the spores are not globose. It is a most interesting addition to the Hypo- 
gæous Fungi, and, like Cycloderma, connects Trichogastres with Myxogastres through 
Lycogale. The early condition of the plant is, however, quite unknown. The colour of 
the spores reminds one of Lycogale, and the veins of Hysteromyces. A Fungus was 
found by.Mr. Drummond on the Swan River, resembling a large cocoon, which is 
undoubtedly congeneric with this, if not identical. The specimens were, however, very 
imperfect. 
‘EXPLANATION OF THE PLATE. 
Tas. XXV. A. 
Fig. 1. Skepperia convoluta, nat. size. 
Fig. 2. Single plant, magnified. — 
Fig. 3. Section of pileus before the stem completely vanishes. 
Fig. 4. Section of ditto more highly magnified. . 
Fig. 5. Hymenium. ; 
‘Tas. XXY. B. 
Fig. 1. Mitremyces Ravenelii, nat. size. 
Fig. 2. Section slightly magnified. 
Fig. 3. Flocci from young peridium and spores. 
Fig. 4. Flocci from old peridium. 
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