This is perhaps one of the two best warscewiczii semi alba there is the other being 'FMB'. The 'Kathleen' clone has slightly larger flowers but very distinct colors in the lip and sometimes the petals have a bit of a purple flare at the top.. This is an absolutely superb offering. Grow in medium to high light and in intermediate to warm conditions. Water and feed generously in the spring and summer months and somewhat less in the winter months. This is a must for collectors!