I would certainly concur with all of Jane's points differentiating L. autumnale and roseum. I have never heard of suggestions that they are anything other than discrete and distinct species. In my hands L. roseum is very slow to increase and more prone to rot. I have never tried it outside and doubt it would 'do' at all. L. autumnale does OK outdoors here but hates repeated freeze-thaws and ice on the leaves. Dr John T Lonsdale, 407 Edgewood Drive, Exton, Pennsylvania 19341, USA Home: 610 594 9232 Cell: 484 678 9856 Fax: 801 327 1266 Visit "Edgewood" - The Lonsdale Garden at http://www.edgewoodgardens.net/ USDA Zone 6b