1 | Perennial plant with woody rootstock, sometimes even like a subshrub |
1' | Annual plant |
2 | Inflorescences leafy, the flowers in small axillary clusters; leaves coriaceous |
2' | Inflorescences spiciform, terminal, slender, not leafy; leaves not coriaceous |
3 | Inflorescences leafy; flowers solitary, axillary, or in small axillary clusters; bracts leaf-like, longer than the flowers |
3' | Inflorescences not leafy, spiciform; at least the upper bracts inconspicuous and shorter than the flowers |
4 | Perianth pink and white |
4' | Perianth green, sometimes with pink or white margins |