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Relicinopsis malaccensis
(Nyl.) Elix & Verdon, Mycotaxon
27: 282 (1986).
Syn.:
Parmelia malaccensis
Nyl., in Nyl. & Crombie, J.
Linn. Soc. London, 20: 51 (1883).
Description:
Thallus
adnate, 4–5 cm wide; lobes sublinear and imbricate, 0.8–1.5
mm wide, with eciliate margins; upper surface yellow green,
transversely cracked with dense, mostly simple, small (to 0.3
mm high) isidia; lower surface pale to dark brown with
dense, simple rhizines to margins. Cortex K–; usnic acid and
atranorin. Medulla K–, C–, KC–, P+ orange; protocetraric
acid. Distinguished from
R. rahengensis
by the presence of
protocetraric acid and the absence of barbatic acid in the
medulla.
Ecology and distribution:
Corticolous in a mixed
deciduous forest at 800 m in Mae Hong Son Province, Mae
Lao–Mae Sae Wildlife Sanctuary. Reported from Australia,
Africa, Sri Lanka, Malaysia, Sabah, Indonesia, Sarawak,
Papua New Guinea, India (ELIX 1994f; DIVAKAR &
UPRETI 2005), the Philippines and Thailand (POOPRANG
et al. 1999, WOLSELEY et al. 2002).
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Medulla yellow to orange at least in part
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Medulla white
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Lobes 6-11 mm wide. Rhizines simple. Medulla P- (vulpinic)
Parmotrema sulphuratum (Nees & Flot.) Hale
Parmotrema sulphuratum
(Nees & Flot.) Hale, Phytologia
28: 339 (1974).
Syn.:
Parmelia sulphurata
Nees & Flot., Linnaea 9: 501
(1835).
Description:
Thallus loosely adnate, 6–10 cm wide;
lobes subirregular, 6–11 mm wide with ciliate (0.5–1 mm
long) margins; upper surface grey or yellowish–green,
irregularly cracked exposing sulphur yellow or orange
medulla, with fragile isidia; lower surface black with brown
margin; rhizines long, sparse, scattered. Cortex K+ yellow;
atranorin. Medulla K– (yellow medulla) or K+ purple (orange
medulla), C–, KC–, P–; vulpinic acid, ± skyrin. Distinguished
by the sulphur–yellow medulla.
Ecology and distribution:
Corticolous in a mixed deciduous forest at 700 m in Mae
Hong Son Province, Mae Lao–Mae Sae Wildlife Sanctuary;
reported from Thailand by POOPRANG et al. (1999).
Pantropical (ELIX 1994).
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Lobes 1.5-5 mm wide. Rhizines simple to dichotomously branched. Medulla P+
orange-red (salazinic)
Hypotrachyna ramkhamhaengiana Elix & Pooprang
Hypotrachyna ramkhamhaengiana
Elix & Pooprang,
Mycotaxon 71: 113 (1991).
Description:
Thallus adnate; lobes subdichotomously to
irregularly branched, 1.5–5.0 mm wide; upper surface pale
grey to grey, becoming strongly white–maculate with sparse
to dense, cylindrical, simple or rarely branched isidia;
medulla white or yellow in part; rhizines moderately dense to
dense, simple or sparsely dichotomously branched. Cortex
K+ yellow; atranorin. Medulla K+ yellow turning dark red,
C–, P+ orange–red; salazinic acid (major), pigmentosin A
(minor) and traces of consalazinic acid and secalonic acid A.
Distinguished from
H. crenata
by the yellow medulla, simple
isidia and the salazinic acid complex in the medulla, with
traces of secalonic acid A.
Ecology and distribution:
Endemic to Thailand and at present only known from the
northern provinces; apart from the type locality, it also occurs
in Chiang Mai Province,in montane evergreen forests and in
oak/chestnut forests, at 1550–1600 m.