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species is easily recognized in its typical form by the laminal
apothecia. Some specimens have ascomata developed mainly
along the margins of the upper surface; in such specimens the
lower surface should be checked for the presence of
pseudocyphellae on special outgrowths, especially in the
central part of thallus.
Ecology and distribution:
In northern
Thailand it is known from the Doi Suthep National Park,
between 1000 and 1676 m. Also reported from China, India,
Indonesia, Japan, Nepal, Papua New Guinea, Russia, and
South Korea (RANDLANE et al. 1995).
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Pseudocyphellae on both surfaces. Apothecia rare. Medulla P+ orange
Cetreliopsis thailandica Elix & M.J. Lai
Cetreliopsis thailandica
Elix & M.J. Lai, Mycotaxon 84: 356
(1984).
Description:
Thallus loosely adnate; upper surface pale
yellow–brown with abundantly lobulate margins; soredia and
isidia absent, pseudocyphellae present on upper and lower
surface; lower surface ivory to yellow brown at margins,
black in centre, strongly rugose. Apothecia vestigial,
marginal; pycnidia common along margins, up to 1 mm high,
with blackened apices. Upper cortex K-; usnic. Medulla K-,
C–, KC-, P+ orange–red; quaesitic, fumarprotocetraric and
protocetraric acids.
Ecology and distribution:
Corticolous in
northern Thailand, only known from the type locality: Chiang
Mai, Doi Suthep National Park, 1400 m.
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Lobes not fringed by branched lobules. Apothecia frequent
Cetrelia cf. nuda (Hue) W.L. Culb. & C.F. Culb.
Cetrelia cf. nuda
(Hue) W.L. Culb. & C.F. Culb., Contr. U.S.
Natl. Herb. 34: 513 (1968).
Description:
Thallus large, 15-25 cm wide; lobes 0.6-1.8 cm
wide. Upper surface greysh to ashy white, smooth, with
conspicuous pseudocyphellae, Lower surface black, the
margins often coloured like the upper surface. Apothecia
very common, submarginal to laminal, perforate, 1.3-1.5 cm
broad. Pycnidia always present, large. Cortex K+ yellow;
atranorin. Medulla K-, C-, KC+ pink, P-; alectoronic and
α
–
collatolic acids.
Ecology and distribution:
Reported from
Chiang Mai, Doi Inthanon National Park by WOLSELEY &
AGUIRRE-HUDSON (1997). Our material of
Cetrelia
is
presently under revision. For a distribution map see
RANDLANE & SAAG (2004).
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Lobes fringed by branched lobules. Apothecia rare
Cetrelia cf. japonica (Zahlbr.) W.L. Culb. & C.F. Culb.
Cetrelia cf. japonica
(Zahlbr.) W.L. Culb. & C.F. Culb.,
Contrib. U.S. Natl. Herb. 34 (7): 511-513 (1968).
Description:
Thallus medium to large, 6-16 cm wide; lobes
0.5-1 cm wide, the tips occasionally pruinose, the margins
densely fringed with branched lobules; lobules narrow or
broadly expanded and lobe-like, flattened. Upper surface
greenish gray to yellowish-green, tan in old herbarium
specimens, the margins ascending, the surface with
conspicuous pseudocyphellae. Lower surface black, the
margins brown or greyish; rhizines black, sometimes with
white tips, c. 1 mm long. Apothecia sometimes present;
pycnidia black, c. 0.1 mm wide. Thallus K+ yellow;
atranorin. Medulla K−, C-, KC+ pink or KC
−, P−;
microphyllinic,
4-O-methylolivetoric,
and
4-O-
demethylmicrophyllinic acids.
Ecology and distribution:
Reported from Chiang Mai, Doi Inthanon National Park and
Nakhon Nayok, Khao Yai National Park by WOLSELEY &