My Mason Congo Variegated when I got it had leaves that had a yellowish centre stripe the leaf edges were yellow. I has since I got it last year produced one new leaf which started life as a pale green. After a month or two a central yellowing started to show this has spread now and the leaf is mostly yellow with some green, looks really nice .Sansevieria concinna striated has striated leaves but they are very thin and you can hardly see the striations unless you get close. Sansevieria hallii striated seems to come true at least so far. Regards John Interested in Succulent plants other than Cati. why not join us on other_succulents discusion list. To subscribe go to http://www.onelist.com/subscribe.cgi/other_succulents to unsubscribe go to http://www.onelist.com and follow prompts in the left hand column.