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Graphis Scripta 2:114, 1989.
114
TICHENOLOGICAL NOTES FRoM DENMARK
Svanhildur Svane, Botanical Institute, University of Aarhus,
Nordlandsvej 58, DK-8240 Risskov.
Irecanota caesiosora Poelt and Epibtyon poTyphagum D6bb. are
reported as nen to Denrnark and the latter one also on a new
host2 Metzgteria furcata (L.) Dun.
Lecanora caesiosora was collected during the Nordic Lichenological
Society's excursion to Bornholm on June 29, t987, in the quarry by
the cry"t"I lJake at Hamneren (ss ?215). It was found on the loefer
part oi one of the Loose granite boulders on the shady side as a
rather big, welf-developed crust, but sterile.
L. caesiosora belonqs to the Lecanora subfuscata group and is
recognized by big, granular, white-greybfue soralia on a grey,
verrucosa thallus and K+ yel1oe? reaction. It has been collected in
various places in the Southern part of Sweden and in Rogalang in
Norlray (santesson 1984). It has furthermore been found in the
south of Tirol and Gernany, always on acid rocks (Poelt 1955) '
Epibryon pofyphaqun D6bb. During an excursion of students on April
5, 198? to the rernnants of a beech forest south of silkeborg. central
Jutland, f noticed whitish dead spots of a few cn in dian' in
the moss on the stems. The moss, t'letzgeria furcata (L.) Dun', appeared
to have snall black ascostronata on the dead thallus' A
tnallus was not visible, but by nicroscopy algae were found surrounded
by fungal hyphae around the ascostromata. The lichenized
f,ungus tss zrsz) was identified as Epibryon PoTyphagun {D5bbeler
!978, p. 229).
E. poiyphagun was described frorn Hordaland, Norway and has been
found i coirpf! of times in that area on Bazzania or Rhacomit;".ium
Tanuginosui (Hedw. ) Brid. The present discovery on MetzEeria futc€ta
rnay indicate that the host species is without itTrportance.
species growing together rith it wete Mieatea prasina Fr' and loiaria
pulnonarja (L.) Itoffn. and on the non-rrossy parts TheTotrena
Tepadinun (Ach.) Ach. and Pertusatia hynenea (Ach.) Schaerer'
I would like to
Alstrup for their
References:
t.hank prof . G. Degelius, D1. . J. David and Dr. V.
kind assistance with the determinations.
D6bbe1er, P. 1978: Moosbewohnende Ascomyeeten I. Mitt- Bot.
Staatssaml. trliinchen t4: 1-350.
poe1t, J. :-956: Zur Flechtenflora des Bayerisch-Bohnischen WaLdes -
-Denkschr. Regensb. Bot - Ges . 25:55-95.
Santesson, R. 1984: The lichens of Sweden and Norway. - Stockholm
and Uppsala: 333 PP.