Japanese Maple (Acer Palmatum).
Continuing to explore SpeedTree 9 features and how to use trees generated with it in Unreal 5, using nanite. For this goal, I've generated an high-poly (circa 1.9 Million polys) maple in SpeedTree. The biggest part of these polys goes into the leaves, as I want to avoid using a masked material in Unreal (masked materials cost a lot with nanite). I've imported the tree in UE5 as nanite mesh with WPO, opaque material and preserve volume enabled. It seems to work great, tried a forest of circa 100 trees and it runs at circa 70 fps.
Video in SpeedTree