| Characters | Purple variety | Yellow variety | White variety |
| Leaf type | Simple | Simple | Simple |
| Leaf shape | Cordate | Deltoid | Cordate |
| Leaf apex | Acuminate | Cuspidate | Acute |
| Leaf margin | Repand/serrate | Sinuate | Entire |
| Leaf venation | Palmately netted | Palmately netted | Palmately netted |
| Leaf arrangement | Alternate | Alternate | Alternate |
| Leaf base | Cordate | Hastate | Cordate |
| Leaf colour | Purple/green | Green | Green |
| Stem colour | Purple/red | Green | Green |
| Root colour | Purple/green | Yellow/green | White/green |
| Leaf length (cm) | 8.5 | 10.3 | 8.1 |
| Leaf breadth (cm) | 7.4 | 12.1 | 9.4 |
| Leaf weight (g) | 11.7 | 16.3 | 12.3 |
| Petiole length (cm) | 5.9 | 16.3 | 14.4 |
| Plant height (cm) | 45.3 | 50.9 | 46.9 |
| Stem diameter (mm) | 3.2 | 2.2 | 3.5 |
| Root length (cm) | 12.3 | 18.7 | 16.7 |