Streptocarpus 'Double Trouble'. 1999, IR99599, J. Ford, OH. . ('Rosebud' x 'Purple Velvet'). Seed fertile, pollen sterile, reproducible only vegetatively. Rosette, mature in 25 cm (10 in.) pot. Leaves bullate, dark green, 16 cm long x 6 cm wide, elliptic with serrate margin and acute tip. 1-2 flowers per peduncle. Corolla salverform, double, tube 3.4 cm long, limb 6.4 cm x 6.6 cm, dark blue with light blue veining on upper two lobes and darker veining on lower ones. First commercial listing 1989, Tiki Nurs. cat. "Double lavender-purple bloom with wine color striping on lower petals." 1991, Kartuz cat. "Large mid-blue double flowers, deep blue lines radiating from center. The best double flowered Streptocarpus hybrid to date."