Photoscanned and retopologized trunks of pollard willow that I used in a few projects that I made this year.

Shaders for Cycles and Octane render engine

3 maps:

albedo for scanned mesh

albedo for retopologized mesh

normal map baked to retopologized mesh 

Polycount:

Retopologized: 116 559

Raw scan: 1 385 493

Other similar models are available here:

Pollard willow 1

Pollard willow 2

Pollard willow 3

Pollard willow 5

hand-modelled branches which can be used with these scans

whole set of 5 trunks

set of prepared tree which include these branches too are available from this link