Per Gerhard Ihlen
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Per Gerhard Ihlen, lichenologist, specialized in the genus, Rhizocarpon.
- Department of Ecology and Environmental Science, Umeå University, SE-901 87 Umeå, Sweden.
IPNI standard form: Ihlen
- Biography of Per Gerhard Ihlen (Universitetet i Bergen )
- Per Gerhard Ihlen defended his doctoral thesis on Rhizocarpon species in 2002 (International Lichenological Newsletter 36(2), page 27)