This tree is a supportless and bulkier limbed remix of 'Swamp Tree' by Micahol from Thingverse: https://www.thingiverse.com/thing:4861749/files

I remixed the model so that it would:

•  not require supports, 
• so that it would be more resilient for tabletop use, and 
• so that it would scale to the standard tabletop battlemap (~25mm base). 
• I also made additional edits to extend the trunk, add roots to the base to make it more like a cypress tree. 

I recommend adjusting the height between the trees when you print to give them some variety. 

The base of the tree fits in a standard medium space and is relatively stable depending on how rambunctious your players are. That said I have a based version as well. The tree on the based version is slightly smaller (80% scale) so that the roots fit on the base. 

I recommend the version without the base as it really is just as stable.