| Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Xerxes' | Medium | Med-Green | Streaked | White | Hybrid | Pale-Lavender | August | Malloy, Alex | .2002 |
| 'X-ray' | Small | Med-Green | Medial | White | Nat-Sport | Deep-Purple | August | Simmering, Ron | .2000 |
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