SriLankaLichens_Book_eng - page 18

18
45
Thallus heteromerous,
clearly dorsiventral,
not gelatinous when
wet
Coccocarpia
pellita (Ach.)
Müll. Arg.
45
Thallus
homoiomerous, not or
weakly dorsiventral,
more or less gelatinous
when wet
46
46
Thallus paper-thin.
Lobes smooth to
faintly striate
Leptogium
cyanescens
(Rabenh.) Körb.
46 Thallus thick. Lobes
clearly striate 47
47 Isida thick, mostly
laminal
Leptogium
austroamericanum
(Malme) C. W.
Dodge
47 Isida granular, mostly
marginal
Leptogium
millegranum
Sierk
48
Lower surface pale
throughout (white to
tan)
49
48
Lower surface dark
brown to black, at least
in the central parts
67