Plants 30-40 cm tall. Flowers 4-7 cm wide in a loose arching spike of 4-10. Perianth upturned, trumpetshaped, white to red with prominent darts; lobes usually with very wavy edges. Spring.
The original G. colvillei Sweet was an F1 hybrid of G. tristis and G. cardinalis having deep pink flowers with a cream stripe on each of the lower perianth lobes. However, other S African species such as G. carneus may have contributed to this group.
Flowers pale rose pink, with darts of deeper pink and white
Flowers muted pink with cream and maroon darts.
Flowers bright orange-red.
Flowers pure white with yellow shading along the midline of each lobe.