Ian, you are certainly promoting the New Zealand flora to the world. I am hoping to see further pictures.
I saw a good assemblage of Raoulia eximia on the Ida Range earlier in the week. This species reaches its southern limit there. They like a good solid rocky outcrop to anchor themselves to despite appearing to grow in amongst scree. This area is also the stronghold of Raoulia petriensis another strange and curious plant.
According to the geologists screes do not form on the schistose mountains of Central Otago and the transition from graywacke typical of the Canterbury mountains to schist occurs in North Otago. Ian's pictures from Mt Hutt show well developed graywacke screes typical of the main Southern Alps. The screes have there own suite of specialised plants that are by and large absent from the Central Otago mountain ranges such as the Old Man Range
