1 | Inflorescences arising from current year's shoots; flowers normally pentamerous, styles normally 3 |
1' | Inflorescence arising from year-old twigs |
2 | At least bracts of lower parts of racemes shorter than pedicels; flowers pentamerous |
2' | Bracts all longer than pedicels |
3 | Bracts not exceeding calyx; flowers usually tetramerous |
3' | Bracts nearly equalling calyx, up to or exceeding flowers |
4 | Petals trullate-ovate, shortly cuneate; flowers tetra-, penta- or mixed tetra-pentamerous; rhachis of racemes and younger parts usually papillose |
4' | Petals obovate-unguiculate; flowers usually tetramerous, sometimes pentamerous at apex of inflorescences; rhachis of racemes and younger parts not papillose |