Minecraft 1.7.10
Mantle 0.3.1
Natura 2.2.0-b1

MFR doesn't see anything from Natura as harvestable in this newest version, though it worked in the past. In the process of testing this, I also noted that all Natura trees are fire proof to the extreme, including the liquid incandescent death known as blazing pyrotheum.

There appears to be some quirks with sapling growth. Eucalyptus saplings wont grow if there is anything around them within 7 blocks and if they are forced to grow with bonemeal they just disappear. Willows exhibit similar behavior, except the just won't grow even with bonemeal and can be planted on stone and Darkwood and Fusewood works the same as willow minus the stone quirk. Maple, Amaranth, Ghostwood, Tigerwood, Sakura and Silverbell appear to ignore blocks and just grow around obstacle without replacing them where as Bloodwood and Redwood saplings replace any block in their way.