Just like the other Triosteum spp., this species has large, bold leaves; insignificant flowers I would say, which are followed though by conspicuous, red fruits in the fall.
Would be nice grown together with T. pinnatifidum for autumn fruits display.
Germination: try to file as much as possible the hard coats and sow cold/ moist.
Better if possible, file the fruits (or other method of scarification); follow with GA3 treatment then cold/moist-cold stratification.
Please read more about Triosteum here: Friday’s seeds or is it a fruit?