Microscopy data on fungal structures in the tissues of leafy and simple thalloid II liverwort species sampled from High Arctic Spitsbergen

Microscopy data on the percentages of stem length colonised by (i) hyphal coils, (ii) stained septate hyphae and (iii) dark septate hyphae, and (iv) percentages of rhizoids colonised by hyphae, in 26 leafy liverwort species and two simple thalloid II liverwort species sampled from High Arctic Spitsbergen and sub-Antarctic South Georgia.