-ry wL - Universitetet i Oslo

Graphis Scripta 22128-133 , 1989.
128
CIADONIA NOR\IEGTCA A}ID C. INCRASSATA IN FINIAND
Mikko Kuusinen, Soili Stenroos & Teuvo Ahti, Dept. of Botany,
University of Helsinki, Unioninkatu 44 , SF-ool'? 0 HeIsinki,
Finland.
ABSTRACT. During recent field work concentrating on
threatened or rare lichen species in Finland two species of
Cladonia sect. Cocciferae , vLz. Cladonia no:rregica Tpnsb. &
Holien and g. incrassata Plorke, were recorded as new to
Finland. C. norrregica is also reported f rom Poland and ltaly '
Cladoni-a norrregica
This small Cladonia species was described by T/nsberg and
Holien (1984) from Nor:vay, where it is widespread in hunid
picea abies forests. L,ater it hras recorded f rom Sweden (l{uhr
j.9g6) , West Gemany (wirth Lg87) , and Austria (Ruoss et aI-
19g7) . This is the first record of C. notrrecrica from Finland,
poland and f ta1y. g- nonregica seems to be prirnarily a boreal
species occurring in Fennoscandia and high mountains of
Central EuroPe (Fig. 1) -
The morphology of e. norrrecrica nas well described by T/nsberg
and Holien (1994). However, the podetia of this species are
usually shorter (< 1 cm high) in Finland than in the
Norrregian naterial ( 1. 5 - 3 cm high) . The best f ierd
character of this species, vLz. the small, intensively red
spots on the basal squamules and the medulla of the podetia,
was not nentioned in the original description, but was
obselrred by Ruoss et al . ( 1987 ) . These red spots contain
rhodocladonic acid. They are often visible to the naked eye
and seem to be most common on aging thalli. g. notrregica is
usually sterile in Finland,, but fertile sPecimens have been
found occasiona1lY.
The chemistry of rnost of the specimens collected from Finland
was tested by the standard methods of thin layer