There are nowadays diploid (cashmeriana), tetraploid (Tinker, Cynthia, Lady Jane ) and pentaploid T. clusiana, Crossing the diploids with the tetraploids one obtained triploids (Sheila, Tako, Tubone) There are also crosses with montana/linifolia. Ben Zonneveld b.j.m.zonneveld@biology.leidenuniv.nl Institute of Molecular Plant Sciences Clusius laboratory PBox 9505 2300RA Leiden The Netherlands