Pekka Halonen

Pekka Halonen, Finnish lichenologist (specialised on Usnea)

• Botanical Museum, P.O. Box 3000, FIN-90014 Univ. Oulu, Finland

IPNI standard form: Halonen

Publications

• Studies on the lichen genus Usnea in East Fennoscandia and Pacific North America. Academic Dissertation (2000), University of Oulu, Finland

External links

• Studies on the lichen genus Usnea in East Fennoscandia and Pasific North America. (2000)
• Usnea pacificana, sp. nov. and U. wasmuthii (Lichenized Ascomycetes) in Pacific North America. (2000)
• Proposal to Conserve the Name Usnea fulvoreagens (Lichenized Ascomycota, Parmeliaceae) with a Conserved Type. (2002)
• Taxonomy, distribution and threat status of deficiently known lichen species in Finland. (2005)