Skógræktarritið - 15.05.2005, Blaðsíða 91

Heimildir
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Summary
Alectoria sarmentosa ssp. sarmentosa found for the first time in lceland
The arboreal lichen species Alectoria sarmentosa ssp. sarmentosa was discovered forthe first time in lceland in
2004, when two speciemens were found in an old birch (Betula pubescens) woodland in Skorradalur in
southwestern Iceland. The woodland, Vatnshornsskógur, is one of the few remaining intact birch
woodlands in the area and is known for it's relatively old and large trees. The larger lichen specimen found
was about 25 cm in length (Fig. 1) indicating that it is not a recent colonizer in the woodland. The
discovery of the lichen in an old, isolated birch woodland may indicate that the species was more
widespread in the area in the past but lost ground due to clearance of most of the birch woodlands.
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