SriLankaLichens_Book_eng - page 29

29
87
Medulla UV+ blue-
white (alectoronic and
α–collatolic acids)
Parmotrema
nilgherrense
(Nyl.) Hale
88
Thallus with soredia
(sometimes mixed
with isidioid
outgrowths)
89
88 Thallus with isidia 109
89
Medulla yellow to
ochraceous yellow at
least in the upper or
lower part
90
89 Medulla white
throughout 92
90 Lobes 0.5-2 mm wide
Myelochroa
aurulenta (Tuck.)
Elix & Hale
90 Lobes >3 mm wide 91
91
Thallus yellowish grey
(usnic acid). Medulla
K+ dirty brown, KC-,
P+ orange-red
(protocetraric acid)
Parmotrema
dilatatum (Vain.)
Hale