-ry wL - Universitetet i Oslo

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species : it grrows on the surface of old, vertical , up to L m
high peat-cuts.
The locality of g. incrassata is situated in a densely
popuiated area in the city of Espoo close to Helsinki. The
bog Turrresuo was earlier excavated for peat-litter industry
and later used as a dunp site, and most of it is now buried
under garbag€. It is therefore probable that g. incrassata
was previously more widespread in the bog. During a thorough
survey of the rest of the bog in May 1989 the species proved
to be verar sparse in the area, only ca. 8 patches being found
witlrin ca. 2OO tn2.
g. incrassata is classified as an endangered species in
Finland (Rassi et aI. 1986, Rassi & Vdisinen 1987). The
loeality of the species has late1y been threatened by
constrrrction in the area. However, it seems now that the
Iocality will be saved as a municipal consenration area, the
first one in Finland established for a lichen species.
Selected specinens examined: FINIAND. Uusinaa. Espoo:
Mankkdd r Turrresuo ( ItNuij ala, Kilonsuofr ) , L979 Afrti 37788 (H,
O) ; 1987 Kuusinen, Stenroos & Atrti. 996 (H) .
Acknowledgenents
The field work nas partly financed by the Finnish Ministry of
Environnent, and the detailed mapping of e. incrassata by the
City of Espoo. l{r. Sanuel Hamrner revised the English
languagre.
REFERENCES
Ahti, T. 1977: Cladonia wigg., nom. cons. subgen. Cladonia. -
In: Poelt , J. & Vezda, A. (eds. ) . Bestimmungsschl0ssel
europiischer Flechten, Erginzungsheft I. Biblioth.
Lichenol . 9:45-95.
AlmboFD, O. L948: Distribution and ecologry of some South
Scandinavian lichens. Bot. Notiser suppl. 1 (2) :L-252.
Culberson, c.F. L9722 Improved conditions and new data for
the identification of of lichen products by a standardized
thin-layer chromatographic rnethod. J. Chromatogr . 72 z LL3-
L25.