SriLankaLichens_Book_eng - page 22

22
60 Thallus with soredia 61
61 Lower surface
corticate throughout 62
61 Lower surface non-
corticate 64
62
Soralia not apical,
more or less linear and
continuous along lobe-
margins. Salazinic acid
present
Heterodermia
albicans (Pers.)
Swinscow & Krog
62
Soralia apical, on main
lobes and on short
lateral lobes, more or
less lip-shaped.
Salazinic acid absent
63
63
Soredia farinose.
Without norstictic acid
(medulla K+ yellow)
Heterodermia
speciosa (Wulfen)
Trevis.
63
Soredia granular. With
norstictic acid
(medulla K+ yellow,
then red)
Heterodermia
pseudospeciosa
(Kurok.) W.L.
Culb.
64
Lower surface without
yellow to orange
pigments
Heterodermia
japonica (M. Sato)
Swinscow & Krog