Friesia X, 4-5

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of marine fungi, but other fungi will then take over. This old wood
is characterized by severe general decay and is often found to bear
fruit bodies of terrestrial fungi such as Testudina ierrestris, Coniochaete
sp. and perhaps some species of Leptosphaeria and Pleospora
of terrestrial origin.
FRUIT BODY FORMATION IN RELATION
TO THE BIOLOGY OF DISPERSAL
The abundant occurrence of fruit bodies on typical driftwood in
zone 3 would indicate that the placing of the wood in the sand with
a suitable air exehangs is ideal for the formation of fruit bodies and
the poesible variation in the location of the fruit bodies is undoubtedly
fully utilized by the individual species under these conditions.
Nevertheless the individual species recorded appear to be extremely
conservative with regard to location of fruit bodies in relation
to the substrate. Two groups are clearly discernible, namely a) those
species which fructify in or on the substrate and b) those species
which fructify outside the substrate on sand grains, shells, etc. The
former group can be subdivided into species possessing fruit bodies
chiefly immersed in the wood and those which form fruit bo dies on
the surface of the substrate (see Table 2).
Group 1: Perithecia in and on the substrate
a) Perithecia chiefly immersed, rarely on the surface
of the substrate and not outside. Examples: Remispora
stellata, Ceriosporopsis halima, Remispora pilleata,
Halosphaeria mediosetioera, H. tubulijera.
(Fig. 18).
b) Perithecia chiefly on the substrate surface, rarely
immersed and not outside the substrate. Examples:
Corollospora comata, Amylocarpus encephaloides
Crinigera sp., Lindra spp., Eiona tunicata. (Fig. 13
and 14).
Group 2: Perithecia chiefly outside the substrate, rarely on the
surface, not immersed. Examples: Corollospora maritima,
C. tubulata, C. lacera, C. trijurcata, Corollospora
sp., Carbosphaerella leptosphaerioides.