Clematis marmoraria (male)

North-west Nelson marble clematis. Precious and rare, males only available, so flowers have stamens and last well.  Native to marble areas of NW Nelson. Large clematis like flowers on a diminutive creeping plant with underground stems which will eventually colonise quite a large area. Part sun, but not too hot for the root run, as for all clematis. They like a little lime or neutral soils, lovely in a suitable container, but cool crevices are the perfect place for them to grow. Slow growing (so slow, hence the price, happy for them to stay at home and bulk up), but rewarding and flower well. Threatened in the wild where they grow deep in marble crevices.  https://www.nzpcn.org.nz/flora/species/clematis-marmoraria/

Check out Celmisia bellidiodes, the two cohabit beautifully in my trough facing east next to the house. 

 A few plants available when it warms up and they have get themselves cracking.