Disa Kewensis ( = Disa uniflora x Disa tripetaloides) Two of the 5 buds are currently (June 2003) open. Flowers are 1-3/4" (4.5 cm) to 2" (5 cm) wide, and thus considerably smaller than those of Disa uniflora which are about 3-3/4" (9.5 cm) wide.