1.7.0 doesn't seem to work with Lignumis at all now
Tree seeding becomes only obtainable with Astroponics research or Wood Cultivation research which is way after space platforms and I don't think it was intentional for us to only be able to obtain tree seeds through random chance of chopping down entire forests. (Basically, the Basic Agriculture Tech vanished entirely)
1.6.4 seems to work just fine for the time being so for it to be a dependency, I was unsure if I should be posting this here or in the Astroponics forum but i'll try here first