Message - 7th IAL Symposium

The 7 th International Association for Lichenology Symposium 2012
(2A-2-P3) Submission ID: IAL0058-00001
VARIABILITY IN EURASIAN VAGRANT LICHENS OF THE XANTHOPARMELIA PULLA GROUP
Vondráková O. 1
1 Ural Branch of Russian Academy of Sciences, Institute of Steppe, Orenburg, Russia
With grant support (Visegrad scholarship 61-51000067) we have studied and revised more than
400 specimens from Europe, southern territories of Russia and Central Asia. Our appraisals have shown that
vagrant fruticose phenotypes from the Xanthoparmelia pulla complex differ from saxicolous foliose specimens
of X. pulla s.str. by absence of apothecia and some cortex and medullar characters. These phenotypes used to
be classified as subspecies of X. pulla, but more recently, several species have been recognized among them.
Nevertheless, we have observed intermediate individuals between various phenotypes. TLC and HPLC chromatographies
were used for analyses of secondary metabolites. Majority of samples, including nomenclatural
types of vagrant Xanthoparmelia pokornyi (Körb.) O. Blanco, A. Crespo, Elix, D. Hawksw. & Lumbsch, X. ryssolea
ryssolea (Ach.) O. Blanco, A. Crespo, Elix, D. Hawksw. & Lumbsch and X. taurica (Mereschk.) S.Y. Kondr.
contains the stenosporic acid as the main compound; this agrees with known data from literature. However,
minority of terricolous vagrant specimens have absence of stenosporic acid and posses only the gyrophoric acid
and one always present unknown substance. This newly recognized chemotype does not reflect morphological
characters, but it is geographically well-determined, being restricted to regions around the northern Caspian
Sea. Our ITS nrDNA sequences generated from samples of various phenotypes of Xanthoparmelia pulla s. lat.
show extremely little variability most of them are identical and others only differ in one or two substitutions. It
may be interpreted as (1) the locus is too conservative to recognize phylogenetic species within the group or (2)
X. pulla s. lat. represents only one polymorphic phylogenetic species. Similar results from six loci provided the
recent study on American vagrant Xanthoparmelia species by Leavitt et al. (2011).
(2A-2-P4) Submission ID: IAL0063-00002
GENERA HYPOTRACHYNA AND REMOTOTRACHYNA IN BOLIVIA
Flakus A. 1 , Rodriguez P. S. 2 , Kukwa M. 3
1 Laboratory of Lichenology, W. Szafer Institute of Botany, Polish Academy of Sciences, Krakow, Poland
2 Department of Botany and Molecular Evolution, Senckenberg Forschungsinstitut und Naturmuseum,
Frankfurt Am Main, Germany
3 Department of Plant Taxonomy and Nature Conservation, University of Gdansk, Gdansk, Poland
The foliose lichen genera Hypotrachyna and Remototrachyna are currently represented in Bolivia by
46 and 5 species respectively. During the present study numerous species have been recorded as new to the
country, including the southern most localities of Hypotrachyna halei and H. partita, the first record of H. primitiva
for the Southern Hemisphere, and the second world locality of H. neoscytodes. A species of Remototrachyna
is described as new to science. Based on anatomical and morphological characters, three species of
Hypotrachyna have been transferred to Remototrachyna, the results suggesting that the latter is more diverse
in the Neotropics than previously supposed; in view of the wider distribution of the genus, reconstruction of its
ancestral area (previously thought to be restricted to India) requires re-evaluation. Research supported by
NCBiR in Poland under the LIDER Program; project no. 92/L-1/09.
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