Book of Abstracts (PDF) - International Mycological Association

IMC7 Main Congress Theme II: SYSTEMATICS, PHYLOGENY AND EVOLUTION Posters
the genus Micarea was rejected. Scoliciosporum A. Massal
has sometimes been considered close to Micarea, but null
hypotheses assuming monophyly together with the
Micareaceae or the Bacidiaceae plus Micareaceae were
rejected.
626 - A Monograph of tribus Myceneae (Mycena
excluded) in Europe
V. Antonín 1* & M.E. Noordeloos 2
1 Moravian Museum, Botanical Department, Zelny trh. 6
Brno, Czech Republic. - 2 National Herbarium of the
Netherlands, Leiden University Branch, P.O.Box 9514
NL2300 Leiden, The Netherlands. - E-mail:
vantonin@mzm.cz
Tribus Myceneae, in the tradition of the Flora agaricina
neerlandica, vol. 2 (Bas et al. 1995) is characterized by
fruitbodies with an omphalioid, mycenoid or
tricholomatoid habit, a pileipellis in form of a cutis or
ixocutis, sometimes with transitions to a trichoderm, with
smooth, coralloid, diverticulate elements, amyloid or
inamyloid spores, and white spore print. Revisions of all
genera, except Mycena, are given, based on a thorough
examination of material from all parts of Europe, including
type-specimens and additional information. Particularly the
genus Hemimycena appeared to be in need of a critical
revision, because no serious monograph had been
published after the Mycena monograph of Kühner (1938).
Revision is hampered by the lack of type material,
particularly of the species described from the (sub)alpine
belt in Haute Savoie, France by Valla (1957). The present
authors now accept 32 species, including 3 new ones. Type
revisions result in a few name changes. In the difficult
complex of H. mauretanica, a wide species concept is
proposed. The genus Xeromphalina now is represented
with eight species in Europe, including the North American
X. brunneola and X. campanelloides. The genus Rickenella
embraces after revision also the genus Jacobia, and is
represented with 7 species.
627 - Methods for the interpretation and the evaluation
of spores in the genus Cortinarius
D. Antonini 1* , M. Antonini 1 & G. Consiglio 2
1 c/o Orto Botanico Forestale Abetone, Via F. Ferrucci 626
- I 51036 Larciano (PT), Italy. - 2 c/o Associazione
Micologica Bresadola, Via C. Ronzani 61 - 40033
Casalecchio di Reno (BO), Italy. - E-mail: dantonini@tin.it
In the genus Cortinarius sl. spores play a fundamental role
in differentiating taxa, as to dimensions, form and
ornamentations. In order to carry out an objective
sporographic analysis, for each collection n spores (at least
32) have been measured with regard to length (L), width (l)
and quotient (Q). Then, the analytic equation of the
isoprobability ellipse at 68,26% level and the equations of
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Book of Abstracts
the tangents to this ellipse have been calculated so as to
obtain the length-width measures of six singular
equiprobable spores, that is, the longest, the widest, the
shortest, the narrowest and those which show the highest
and the lowest Q, respectively. Starting from the basic
spore, with given form and ornamentations, is thus possible
to construct a sporogram with a highly descriptive
effectiveness. The typology of ornamentations has been
evaluated by observations made with both the optical and
the SEM microscope. The results obtained have allowed us
to find out some ranges based on the following features:
ornamentation height [≤ 1 µm (smooth or hardly visible by
the optical microscope); from 1 to 2 µm ; ≥ 2 µm];
development of the ornamentations on the spore surface
(more concentrated towards the apex or in the upper half or
more or less spread on the whole surface); warts form
(rounded, pyramidal or spiny); presence or lack of hilar
plage.
628 - The taxonomy of the Lecanora allophana group
using DNA data
U. Arup * & P. Frödén
Botanical Museum, Östra Vallgatan 18, SE-223 61 Lund,
Sweden. - E-mail: ulf.arup@sysbot.lu.se
Lecanora allophana belongs to the large genus Lecanora
of lichenized ascomycetes. Within the genus there are
several groups of species and L. allophana belongs to the
L. subfusca group, that is spread all over the world. L.
allophana is also the type species of the genus. There are a
number of species related to L. allophana that are more or
less difficult to seperate from L. allophana using
morphological characters. Therefore, there has been much
doubt in some of the species of the group. Molecular
studies, using nuclear ribosomal ITS data, show that most
species in the group are well separated and that there are
even more species than previously understood. However,
within L. allophana and L. horiza the molecular data are
not homogenous and indicates that there may be so called
cryptic species within these taxa. Further studies of more
genes will have to be carried out to settle this matter.
629 - Application of pectic zymogram in the
identification and genetic variation of Fusarium species
G.R. Balali * & M. Iranpour
Dept of biology, University of Isfahn, Isfahan 81744, Iran.
- E-mail: rbalali@sci.ui.ac.ir
The genus Fusarium includes several species which
classified based on morphological characters. Different
media are required to study the morphological characters of
different species. Regarding molecular and biochemical
techniques for identifying fungi, pectic zymograms have
been used to characterized different fungi. Zymogram
technique was used to identify species and form species of