| 1 | Racemes during anthesis 7-10 cm in diam., the peduncle and rachis 2-2.5 cm. Stipules very short (no data for B. ariza), 0.3-0.6 cm. Pedicels 5-11 mm. Stamens 3-4.5 cm. Pods 8-18 by 2.5-4.5 cm |
| 1' | Racemes during anthesis 14-20 cm in diam., the peduncle and rachis 3-6 cm. Stipules conspicuous, very long, 7-16.5 cm long. Pedicels 9-13 mm. Stamens 6 cm. Pods 12-24 by 4.5-6 cm |
| 2 | Peduncle and rachis of the raceme during anthesis c. 2.5 cm; pedicels c. 5 mm. Stamens 3-3.5 cm. Pods rusty velvety |
| 2' | Peduncle and rachis of the raceme during anthesis 1-1.5 cm. Pedicels 5-11 mm. Stamens 4-4.5 cm. Pods thinly shortly hairy |
| 3 | Young branchlets densely brown hairy. Petals bright red.. |
| 3' | Young branchlets glabrous or subglabrous. Petals varying from crimson to cherry- red |
