SriLankaLichens_Book_eng - page 45

45
148
Apothecia not
immersed in the
thallus. Thallus C-.
Spores colourless
149
149
Apotecial margin
black to brown, not
containing algae
150
149
Apothecial margin
much paler than disc,
containing algae
152
150
Thallus of areolae
developing on a
conspicuous black
prothallus
Phyllopsora
borbonica Timdal
& Krog
150
Thallus different, not
developing on a
conspicuous black
prothallus
151
151
Thalllus granular.
Spores 5-11
transversely septate
Megalospora
tuberculosa (Fée)
Sipman
151
Thallus continuous or
cracked, not granular.
Spores 2-celled
Megalospora
sulphurata Mey.
& Flot.
152 Apothecial disc black.
Hymenium purple
Tephromela atra
(Huds.) Hafellner
v. atra