1 | Ovary hairy |
1' | Ovary glabrous |
2 | Inflorescences terminal on leafy shoots |
2' | Inflorescences lateral on short side branches |
3 | Stipules foliaceous, reniform, more or less falcate to ovate |
3' | Stipules linear, acute |
4 | Leaflets rounded to obtuse at apex; rachis of inflorescence stout; calyx dark red; petals 2.5-3.5 cm long |
4' | Leaflets apically acute; rachis of inflorescence slender; calyx green; petals 1.5-2 cm long |
5 | Sepals 6-9 mm; petals 20-32 mm |
5' | Sepals 4-4.5 mm; petals 15-20 mm |
6 | Stipules 2 cm across; petals distinctly clawed, 15-35 mm; pods up to 60 cm long, 2.5 cm broad |
6' | Stipules 1 cm across; petals narrowed towards the base, 15-18 mm; pods up to 35 cm long, 1-1.3 cm broad |