Delosperma nubigenum looks good Pardancanda but here is a pic of Mesembryanthemum basutoland.
Peter, that sure does look like it! And I think I know why. This page http://www.desert-tropicals.com/Plants/Aizoaceae/Delosperma_nubigenum.html lists Mesembryanthemum nubigenum as a synonym of Delosperma nubigenum, so maybe it's not too much of a stretch for M. basutoland to be in there somewhere, too? Don't you just loooooooooove it when they mess around with the botanical names? ;-)
Thanks Peter and Wingnut. It is the neatest little plant, flowers were quite a surprise, as I was expecting purple. I have another 'ice plant' Delosperma cooperii, which is putting up fuschia-red buds... John