Ved avdelingen foregår forskning innen en rekke ulike felt, herunder: botanisk økologi, lichenologi, molekylær økologi, mykorrhiza, plantefysiologi, populasjonsbiologi, reproduksjonsbiologi, systematikk og evolusjon. Nedenfor følger en oversikt over pågående forskningsprosjekter:

Botanikk

• Biodiversity of Eastern Africa (Monocotyledonous plants) (Inger Nordal)
• Ecological studies of species of Indigofera in Turkana (Inger Nordal)
• HIBECO: Human Interactions with the Mountain Birch Forest Ecosystem (Frans Emil Wielgolaski)
• Nordic Arctic Research Program (Inger Nordal)
• Man-Made Impacts and Indigenous Forest Management in the Turkwel River Floodplain, Kenya (Jørn Stave)
• Timing of reproduction in the facultative biennial plant Digitalis purpurea (Nina Sletvold / Inger Nordal)
  

Lichenologi

• Population dynamics, ecophysiology and interactions in saxicolous communities (Geir Hestmark)
• Reproduction, biogeography and taxonomy in the family Umbilicariaceae (Geir Hestmark)

Mykologi

• Ectomycorrhizae in boreal and arctic-alpine ecosystems (Klaus Høiland)
• Fungal genotyping, Cu-tolerance and host protection in ectomycorrhizal strains of the Hymenoscyphus ericae aggregate (Trude Vrålstad)
• Molecular ecology and evolution of mycorrhizal Ascomycetes (Trond Schumacher)
• Population biology and phylogeography of Serpula lacrymans, the dry rot fungus (Håvard Kauserud)
• Population biology by fairy-ring mushrooms (Klaus Høiland)
• The tolerance towards toxic elements by fungi (Klaus Høiland)

Systematikk og evolusjon

• Isoenzyme studies of the Arenaria ciliata complex, Viola rupestris complex and Senecio jacobea complex (Inger Nordal)
• Phylogeography, evolution, and taxonomy within Viola spp. (Thomas Marcussen)
• Phylogeny and evolution within the brown-spored agarics of Galerina (Gro Gulden, Øyvind Stensrud and Håvard Kauserud)
• Systematics and ecology of wood-inhabiting fungi world-wide (Leif Ryvarden)
• Systematic and phylogeny in Cortinarius (Agaricales) (Klaus Høiland)
• Taxonomy and molecular phylogeny of stromatic and entomopathogenic ascomycetes (Øyvind Stensrud / Trond Schumacher)