208 Transactions British Mycological Society. 
Another species of Sivosphaera has been collected on two 
occasions in Ceylon, in both instances parasitic on a purple-red 
or purple-brown stroma which is common in Ceylon on the 
insects, Aleyrodes spp., but which it has not yet been possible 
to assign to any group. One of these collections, from Hakgala, 
5600 ft., is on Pavetta indica, and the other, from Peradeniya, 
1600 ft., on Stveblus asper. 
In this species, the pycnidia are up to 0-35 mm. diameter, 
globose, ovoid, or conoid, sometimes turbinate, rugose, at first 
pruinose, sometimes densely, with minute green particles, and 
bearing scattered erect hairs, finally becoming black and gla- 
brous, clustered on a black stroma which ultimately covers the 
purple-brown stroma of the host. Each pycnidium is elevated 
on a base of stromatic tissue which is greenish-yellow internally. 
The wall of the pycnidium is thick, parenchymatous, blackish- 
brown in section with a hyaline inner layer. The ostiola are 
circular, about 50 diameter, not elevated, fringed with yellow 
or greenish yellow hairs. The green granules consist of irregular 
hyphae, 4-6 diameter, pale greenish yellow by transmitted 
light, rough, closely septate, sometimes moniliform, sometimes 
ending in inflated tips or in spore-like spherical bodies up to 
8 » diameter; these hyphae arise from the wall of the pycnidium. 
The scattered hairs are rigid, up to 44 u high, 6 diameter below, 
tapering upwards, thick-walled, sometimes nodular, obtuse’ at. 
the apex. The basidia are simple, 3-9» high, but sometimes the 
chain of spores arises from a short sterigma on a projecting cell 
of the pycnidial wall. The spores are oval, 2-5-3 x I'5m, Or 
globose, I:-5y diameter, pale-brown, sometimes with a clear 
band across the middle. 
This species may be known as Sirosphaera chlorostoma. The 
purple-brown stroma of the host fungus is permeated by the 
hyphae of the Szvosphaera and is blackened internally. In cases 
where the pycnidia are situated on part only of the host fungus, 
the remainder retaining its purple-brown colour, the apparently 
normal part of the host stroma is usually permeated by the 
parasite, except for a thin cortical zone. 
The specimens of Sivosphaera which have come under my 
notice have in all cases been parasitic on entomogenous fungi, 
i.e. on fungi parasitic on scale insects (including Aleyrodidae). 
It would seem probable, from the description of the type as 
“quite superficial,’ that it also was parasitic on an entomo- 
genous fungus. 
SIROSPERMA. 
Another similar fungus has been described by the same 
authors (Engler’s Bot. Jahrb. Liv (1916), p. 258, fig. 2) as the 
type of another new genus, Szvosperma. It was collected in 
