ry rtu

103
the British rsles fairry- crosely (the forroer requires nore humidity
and more rrarmth than the latter) . rn southwestern- Finland
gron
the speciei
together. The annual precipitatlon in the study area is 550 nrr
-(solantie
1982a). The raean nonthry temperature is'below %"C-ir"t
Pgg:tnber to April. The coldest nonth i! February (-4oc) (Helminen
1987). Per:manent s-nov cover. usually protects vegetation' between
January and mid-April (solantie 1987b).
The occulrence of p. pastillifera in Finrand was sonewhat unexpected
because in Europe 5.t- !s usually considered as an oceanic species
(Dobson & Hawksworth 1976). rn northern Europe it was formerly knornrn
only frorn hrestern Noreray (Krog et a1. 1980). So, the
only
find is not
nehr to Finland, but also the first around. the Bartic sea. Due
its rarity,_
to
the spec-iee is in the prelirninary, new listing
threatened
for the
lichens of Finland (in rnanus.). At fresent p. pasiillifera
is not-directly,endangered. Tirus, the proper-category iould be .rin
need_ of T?I1!"rlI-lg], (M) and its subcategbry .t."!r -
(Mr) (Rassi &
varsanen 1987). Although within the south$estern Archipelago itational
Park, the is"1et has not yet been purchased by the sta€e- -
AcknowLedgenents
r wish to thank !4r. orvo vitikainen for confirming ny deternination
of-Pa::melia pastirlifera- (Ham.) schub. & K1en.. frr.-seppo Huhtinen
and- Miss Marja vieno rnade valuabLe comnents on the nanir3cript. tne
field hrork Lras financed by the lrinistry of Environnent and the
Archipelago Research rnst,itute of the university of rurku praced a
boat at ny disposal.
TITERATT'RE
Dobson, F- s. & Hawksworth, D. L. 1976: parrnelj.a pastillifera (Ha n.)
shub. &.Klen. and p. tiliacea (Hoffn.) ech. i'n the British Isles.
' - Lichenologist g: 153-152.
Eklund, O. 1958: Die cefesspflanzenflora beiderseits Skiftet in
Scherenarchipel Sfrdwestfinnlands. - Bidrag Kennedon Finl. Natur
FoIk 101: r-324 + 84 DaDs.
Hel.ninen, V. A. 1987: Kuu)