The only plant of garden interest produced thus far from many dozens of seedlings and a few years of chasing the intriguing possibilities presented by hybrids between H. serrata and H. scandens/angustipetala.  A pink picotee rings the huge, elliptical, white sepals of the sterile florets, and foliage is durable, tardily deciduous (near evergreen in frost-free areas), deeply flushed red on new growth, and again in autumn with cooler temperatures.  Flowers from old wood in late spring, with a habit that's upright.  Height likely around 3' (height of original, though likely taller in warmer climes) and hardiness somewhere in Z6, we'd guess.  Best with some shade. Quart pot