96 
RE-APPEARANCE OP CYCLODERMA. 
cylindrica, aiqualis, capillitioque radiante alba. Sporis minutissi- 
mis, globosis hyalinis. 
On the ground. Ohio, U.S. 
About an inch in diameter, or less, columella two-thirds the 
height of the peridium, wholly white within. 
The double peridium is very distinct, especially as the individual 
advances in age. The outer peridium is composed of rather coarse, 
irregular, contorted fibres, closely interwoven. The capillitium is 
an exceedingly delicate membrane, much folded, and plicate. The 
spores are globose, hyaline, and very minute. We cannot say how 
the spores escape, whether by rupture of the apex, since the speci- 
mens are not old enough to determine, nor yet if they acquire 
colour when more mature. These are points to be determined 
hereafter. They were found growing several together on the bare 
ground. 
The re-discovery of this old genus is to us of far more interest 
than a score of new genera of the modern Padovian type, and, in 
conjunction with Testicularia , attests the accuracy of Klotsch’s 
observations, which were not always so fortunate with Phanero- 
gamia. 
For comparison we give a copy of his sketch of the original 
species on which the genus was founded. 
Plate 160. Figs. 1-2. — Cycloderma indicum , after figures by Klotsch. 
Fig. 3. — Cycloderma Ohiensis, natural size. 
Fig. 4. — Section. 
Fig. 5. — Portion of section showing double peridium. 
Fig. 6. — Capillitium and spores X 400. 
Fig. 7. — Portion of capillitium denuded of spores X 400. 
Fig. 8. — Spoi'es X 400.; 
Fig. 9. — Threads of outer peridium X 400. 
Fig. 10. — Individual with young specimens at the base. 
JDOTHIDEA FEOM LAKE iNYASSA. 
The following foliicolous Dothulea , collected by Thomson, has 
not yet been described : — 
Dothidea Pentanisiae, CooTce. Amphigena. Maculis suborbicu- 
laribus (1 cm.), brunneis. Peritheciis convexis, atris, nitidis, subru- 
gosis, in maculas congestis. Ascis elliptico-clavatis, latis. Sporidiis 
ellipticis, uniseptatis, medio constrictis, loculo inferiore tenuiore, 
fuligineis (*018-'02 x *006 mm.). 
On leaves of Pentanisia ? Lake Nyassa. (Thomson.) 
