GRAPHIS SCNIPTA - Universitetet i Oslo

Pannaria hookeri in Finland
ORVO VITIKAINEN
Vitikainen, O. 1993: Pannaria hookeri in Finland. Graphis Scipta 5:85-86.
Stockholm. ISSN 0901 -7593.
Pannaria hookeri is recorded from Enonteki6 l^apland in Finland, and so the
species re-enters the lichen flora of Finland.
Orvo Vitikainen, Botanical Museum, Mycologt Divbion, P.O. Box 47,
SF-00014 University of Helsinki, Finland.
Pannaia hookeri (Borrer ex Sm.) Nyl. was
recently excluded from the lichen flora of
Finland because its only known record from
southeastern Finland and likewise, the
report from the adjacent part of Russian
Karelia were verified as representing P.
leucophaea (see Jorgensen 1978, 1991).
The species can, however, again be
included in the list of Finnish lichens. Among
the unidentified collections made by A. J.
Huuskonen in Enontekid l^apland in 1956,
one specimen of this species was found, and
two specimens collected by Aino Henssen one
year earlier in the same province proved to
represent P. hookei as well. In fact, the latter
were already recorded correctly in Henssen
(1%e p.236).
The localities are situated north-east of
lake Kilpisj6rvi, in the highest area of Finland,
and agree well with the more southern localities
in the Scandes Mountains of Sweden and
Nonvay (see Jorgensen 1978). The species is
also known from Nordkapp in Finnmark,
Norway, but not, for example, from the Kola
Peninsula.
This spccies was listed among the threatened
lichen species of Finland (Rassi et al.
1986) due to its supposed former presence in
southeastern Finland in the southern boreal
zone, and was classified as extinct. It was
excluded from the most recent list (Rassi et al.
|99?) as it was thought to be absent from
Finland, the record by Henssen (1%9) remaining
unnoticed. Now that it is again part of
the lichen flora of Finland, the species, even if
it is rather rare, should not be considered as
seriously threatened by the activities of man,
and it probably will be found in additional
localities in the higher flelds of Finnish l^apland
where lichens have been explored relatively
poorly.
The localities of the Finnish collections are:
Enontekio Lapland (EnL): Enonteki0, NW.
part, Porojiirvet, Ridni, S slope, alt. 1000 m,
schistose boulder bed, 7.VIII.1956, Henssen
t,e- 1127; summit plateau, strongly weathered
rock, alt. 1300 m, Henssen I-e- ll28 (H, Herb.
Henssen); W. Jehkats, alt. 800 m, on soil,
26.VII. 1 956, Huuskonen (H).
Acknowledgements
I wish to thank Prof. Dr. Aino Henssen, who
kindly supplied important information, and Dr.
I. M. Brodo for improving my English.
Refercnces
Henssen, A. 1969: Die Entstehung des Thallusrandes
bei den Pannariaceen
(Lichenes). Ber. Deutsch. Bot. Gesellschaft
82:235-248.