‘Hikarugenji’ and ‘Herme’ are supposed to be the same. The flowers shown here are quite different so I must compare foliage as well as blooms this season.
The plant labelled C. pitardii is not the true species, which has a single flower. This bears more than a passing resemblance to the plant labelled C. x vernalis ‘Dawn’ at 10-005 in the species section 10, though there are small differences in the buds and foliage. I have come to believe that this is C. x vernalis ‘Ginryû’, which is the correct name for ‘Dawn’. I explain in more detail in a blog.
3C-031 ‘Sylva’ was shown on the plan as ‘Sylvia’ but as with the other plants bearing the name, has insufficient petals and seems much more likely to be ‘Sylva’. That said, ‘Sylva’ is said to be rare in cultivation, most of the plants so named in fact being ‘Jupiter’.
‘The Mikado’ is a sport of ‘Hikarugenji’, differing only in there being an absence of any pink streaks crossing the white margin. This doesn’t seem to hold true here.
In March 2018 a large Nothofagus growing at the back of this section fell doing a lot of damage. 3C-019 ‘Kinsekai’ was right under the trunk which is still lying there in November 2019, though I’m told it is to be winched out soon. Two growing seasons on and with some remedial pruning having been carried out in both years, the damaged plants are slowly recovering. See blog for 15 March 2018.