Bull. Natn. Sci. M us. , Tokyo, Ser. B, 26(4), pp. 135- 138, December 22 , 2000

A New Species of Hypotrachyna(Lichenized Ascomycetes, Parmeliaceae) from Thailand
Kwang Hee Moon\ Syo Kurokawa 2 and Hiroyuki Kashiwadani 3
1Natural Science Institute, Sookmyung Women 's University,
Seoul 140- 742, Korea
E-mail: moonkh@kahaku.go.jp
2
Botanic Gardens of Toyama, Kamikutsuwada 42,
Fuchu-cho, Nei-gun, Toyama 939- 2173, Japan
E-mail: kurok@bgtym.org
3
Department of Botany, National Science Museum,4- 1- 1 Amakubo, Tsukuba 305- 0005, Japan
E-mail: hkashiwa@ kahaku.go.jp

Abstract A new species, Hypotrachy na granulans K . H . Moon, Kurok. & Kashiw.
is described from Province Chiang Mai , Thailand. It is distinct in having the marginal or submarginal soralia composed of granular soredia , a wide erhizinate zone on
the lower surface, and in producing atranorin and norstictic ac id.

Key words:

Hypotrachyna granulans , new species, lichen, Thailand

Species of the genus Hypotrachyna in Thailand has been mostly reported infloristic and ecological reports (Wolseley & Aguirre-Hudson, 1995; Aguirre-Hudson& Wolseley, 1994; Moon et al., 2000). Recently, Pooprang et al. ( 1999) added two
new species in the genus from Thailand. Twenty-one species of Hypotrachyna are
known from Thailand at present.
Among the large collection of the genus Hypotrachyna made through the fieldsurvey of lichens under the project of Collection Building and Natural History Studies in Asia and the Pacific Rim , we found a new species of the genus. In the present
paper, a new species, H. granulans, is described.

Hypotrachyna granulans K. H. Moon, Kurok. & Kashiw. , sp. nov.
(Fig. I)
Thallus ut in Hypotrachyna stictifera, sed soraliis marginalibus vel submarginalibus differt. Thallus corticola, !axe adnatus , lobis subirregularibus, 2-4 mm latis,
superne nitidis, emaculatis, sorediatis, soraliis plerumque marginalibus , granularis,
inferne modice rhizinosis , rhizinis modice dichotomeque divisis. Apothecia substipitata, usque l- 3mm diametro , amphithecio laevis, sporis 14- 16 X l0f..Lm . Thallus
atranoricum et acidum norsticticum continens.
Type collection . Thailand. Prov. Chiang Mai . Chom Thong District: Doilnthanon , on bark of Pinus sp., elevation about 2450 m, 4 March 1998, K. H. Moon

Kwang Hee Moon , Syo Ku rokawa and Hiroyuki Ka shi wada ni

1361•-~";•2-: •Fig. I.
Fi g. 2.
Fi g. 3.

Habit of f-lypotrachy na g ranulans K. H. Moon, Kuro k. & Kashi w. Sca le bar = I 0 mm .
Capitate sorali a of f-lypotrachyna granulans. Scale bar = I mm.
Pustul es of f-lypotrachyna th1:vptica (Hale) Hal e . Scale bar= I mm .

A New Species of Hypotrachyna from Thailand

137(2332) & H. Kashiwadani- holotype in TNS; isotype in Ramkhamhaeng University,Bangkok, Thailand (RAMK).
Thallus foliose , corticolous, loosely adnate, grayish green; lobes subirregu lar,tips rotund, 2-4 mm wide, eciliate; upper surface plane and smooth, shiny, emaculate,sorediate; soralia marginal to submarginal, often capitate, soredia granular; medulla
white ; lower surface black near the center, reddish brown at lobe margins, sparsely tomoderately rhizinate, but erhizinate at a wide zone near the tip, the rhizines dichotomously branched, less than 1.0 mm long. Thallus 136-140 ,um thick; upper cortex
8- 10 pm thick, algal layer about 30 pm thick, medulla 120- 130 pm thick, lower cortex 8- 14 pm thick. Apothecia, subst ipitate, 1-3 mm diameter; disc concave, reddish
brown ; excipl e smooth; epithecium 8- 10 pm , hymen ium about 60 ,um high; asci 24X
16 pm , 8 spored, spores colorless, simple, ellipsoide, 14- 16 X I 0 ,um.
Chemistry. Atranorin and norstictic acid.
Hypotra chyna granulans (Fig. 2) is characterized by the shiny, smooth andemaculate upper surface of lobes, the marginal to submarginal soralia with granularsoredia, the blackish lower surface with a wide erhizinate and brownish marginalzone and the presence of atranorin and norstictic acid as major substances.
The present new species closely resembles Hypotrachy na stictifera Kurok. & K.
H. Moon described recently from Peru (Kurokawa & Moon , 2000). These two species
have similar thalli with soredia and produce atranorin and norstictic acid in common.
However, these two species can be distinguished by following differences. Soralia areusually formed at the tips of short laciniae and seem to be marginal or submarginal inH. g ranulans, while they are formed on upper surface even when they are formednear the lobe margin in H. stictife ra . Soralia are composed of granular soredia in H.
granulans but sored ia are farinose in H. stictifera. In addition, so far as tested with
HPLC , H. granulans lacks stictic acid, which is a main substance in H. stictife ra. H.
granulans is known from Thailand at present, while H. stictifera is known from Peruin South America.
The present new species may be confused with Hypotrachy na thryptica (Ha le)Hale, an Indian species, and Hypotrachyna kingii (Hale) Hale , distributed in southeastern Asia and pacific regions, because they produce atranorin and norstictic acid.
However, the latter two species are pustulate as shown in Fig. 3 and the upper cortex
is fragile and is easily flaked off in part. In addition , H. granulans differs from thelatter species by the absence of stictic or salazinic acids .
At present this new species is known only from Doi (Mt.) lnthanon in Thailand,
where it grows on bark of Pinus sp . associated with H. exsecta (Taylor) Hale, H.
adducta (Nyl.) Hale and My elochroa aurulenta (Tuck.) Hale.
Additional specimen examined. Thailand. Prov. Chiang Mai . Chom Thong District: Doi lnthanon , on bark of Pinus sp. , elevation about 2450 m, 4 March 1998, K.
H. Moon (2331) & H. Kashiwadani.

138

Kwang Hee Moon , Syo Kurokawa and Hiroyuki Kas hi wadani

Acknowledgements
We wish to express our sincere thanks to Dr. K. Boonpragob, Ramkhamhaeng
University, Bangkok, Mr. S. Wattana who works at the Botanical garden at Changmai , Miss T. Pooprang, Mr. K. Wongcheewarat, Ms. R. Noycharoen , and Ms. W.
Khamtim, Ramkhamhaeng University, Bangkok, for their generous help during ourfield study in Chiang Mai . We wou ld like to thank Prof. Dr. Takahashi , the college ofPharmacy, Meiji University, Japan , who kindly made the chemical analysis. We area lso grateful to Dr. P. De Priest, Smithsonian Institution, for the loan of type specimen of Parmelia thryptica.

Literature Cited
Aguirre-Hudson , B. and P A. Wolseley. 1994. Bibliography of Southeast As ian lichenology, 1810- 1992.
J Ha tlori Bot. Lab. 76: 313- 350.
Ha le, M. E. 1972. Four new spec ies of Parm e/ia (Lichens) from Indi a and Philippines. Bryologist 75 :97- 101.
Ku rokawa , S. and K. H. Moon. 2000. New species and new records in Hypotrachyna (Parme li aceae).
Bull. Bot. Gard. Toyama 5: 9- 24.
Moon , K. H., S. Kurokawa and H. Kashi wadani. 2000. A li st of Thai land species of Parmelia (sens. lat.)preserved in the Nationa l Science Museum. National Science Mus eum Monographs 18: 97- 106.
Pooprang, T. , K. Boo npragob and J. A. Eli x. 1999. New spec ies and new records in the lichen family
Parmeliaceae (Ascomycetes) from Thail and . Mycotaxon 71 : 111 - 127.
Wolse ley, P A. and B. Agu irre- Hudson. 1995. Key to lich en genera in Thai land with special reference toepiphytic taxa, part I : Mac ro li chens. Nat. Hist. Bull. Siam Soc. 43 : 303- 335.