Here is one of my better macranthos var hotei-atsumorianum Here is a nice tibeticum This is Cypripedium macranthos 'John Haggar'. It is macranthos x macranthos var hotei-atsumorianum. Malmgren tried to register it as a formal hybrid in 2011 but it was declined as crossing 2 macranthos was not considered valid. I find that John Haggar is very hardy for me. Here is Cypripedium Eurasia. It is macranthos x tibeticum, registered by Nakamura in 2005. It has enormous flowers and the flowers of all the plants look identical. Eurasia is an extremely hardy hybrid for me. I have about a dozen plants, some with up to 6 flowers. This is Cypripedium Henric. It is very similar to Eurasia in that it is macranthos var hotei-atsumorianum x tibeticum, registered by Malmgren in 2010. It is always more of a dark purple than Eurasia. I find Henric's hardiness to be reasonable but not as rock solid as Eurasia. I have several and the flowers of most are huge, a few are not quite as large. Finally we have Cypripedium Dr. Ernst von Siemens. It is xfroschii x tibeticum registered by Urban in 2016. xfroschii has historically been accepted as a natural hybrid by the RHS but most workers now think it is just a form of tibeticum. A couple of mine have very large flowers and a few others have smaller flowers, but all are nicely colored.