GRAPHIS SCNIPTA - Universitetet i Oslo

80 Goran Thor
GRAPHTS SCRTPTA 5 (1993)
Phaeophyscia orbicularis and Xanthoria potycarpa
found.
Bones. One small bone was found on the railway
embankment in the eastern inner area.
Candelariella aurella, Cladonin sp. squamules
and Lecanora hagenu were found on this.
Bricks. Most bricks in the area have been
deposited recently and harbour no lichens. In
the western inner area there is a large area
with recently dumped building material,
including bricks. However, a few scattered old
bricks were found all over the area. In exposed
habitats, Trapelia obtegens, often with apothecia,
was the only species on these bricks. In
more shaded and moist habitats, Caloplaca
chloina, C. citrina and Vemtcaria aff.
acrotella were found.
Concrete and mortar. The most abundant
species are Caloplaca holocarpa, Candelaiella
aurella and Lecanora dispersa. Over large
areas, e.g. on old buildings and concrete beams
delimiting parking areas, these are the only
lichen species. A more species-rich lichen
flora was found on shaded and moist concrete,
especially along the river and near the rockwall.
Besides the above mentioned species, e.g.
Aspicilia moenium (syn. A. excavata),
Caloplaca citrina, C. decipiens, C. saxicola,
Phaeophyscia nigicans, P. orbicularis, Rinodina
gennaii, Sarcogtne regulans and Vemtcaria
muralis were found here. Gulls rest frequently
in some areas along the shore. In connection
to these sites where the concrete is manured
by the birds, a lichen flora with Phaeophyscia
orbicularis, Physcia caesia, P. dubia and Xanthoria
parietind was found. Some species were
only found on concrete close to the shore, e.g.
Caloplaca decipiens, C. saxicola, Lecanora
achaiana, L. muralis, Lecidella stigmatea,
Rinodina gennaii and Xanthoia candelaria.
Concrete under rusted iron is stained by
the rust. The most frequently found species
here was Scoliciosporum umbrinum. Sometimes
Caloplaca citina, Candelariella vitellina,
Lecanora polytropa and Phaeophyscia orbicularis
were also found.
Sarcopyrenia gibba (v. geisleri; Navarro-
Rosinds & Hladun 1990) was found twice on
concrete near the river. The concrete was vertical
and exposed towards east and south. The
species was accompanied by Aspicilia moenium,
Caloplaca citrina, Candelariclla aurella,
Lecanora dispersa and Phaeophyscia orbicularu.
It is here reported as new to Sweden. Sarcoryrenia
gibba is widely distributed with scattered
localities in Great Britain, Central
Europe, South Europe and North Africa
(Navarro-Rosin€s & Hladun 1990). The
nearest locality is in Central Germany
(Navarro-Rosinds & Hladun 1990, Wirth
1980) and the northern limit of the species is
hereby drastically moved northwards.
Rusted iron. Small areas of rusted iron were
found in a few areas along the river. The most
common species was Scoliciosporum umbrinum,
but sometimes Caloplaca citrina, C.
holocarpa, C. decipicns, Candelariclla aurella,
Lecanora diipersa, L. polytropa, L. umbrina,
Phaeophyscin orbicularis, Physcia caesia and
Xanthorin parictina were found.
Pumice. Some pumice was found in the soil in
the central shore area. Vemtcaria muralis was
the only species found on this substrate.
Rocks and pebbles Within the investigated
area only few siliceous rocks were found along
the railway embankment in the east inner area
There is also a rock-wall to the north and
northeast of the gantry crane and some rocks
on the shore in the western shore area. The
rock-wall is vertical and c. 20 to 40 years old.
It was investigated up to 2 m above the
ground. Here Acarospora smaragdula, Cande-'
laiella aurella, Lepraria elobata, Scoliciosporum
umbrinum, Trapelia obtegens and
Trapeliopsis granulosa were found. Lepraria
elobata was reported as new to Sweden by
Muhr (1993). It is here reported as new to the
province of Vtisterg6tland. Lecanora salina
was the only species found on rocks on the
shore. The largest rock at the railway
embankment was newly exposed and harboured
few lichens, but was the only locality