| 1 | Leaf-rachis woolly, flocculose; petiolar gland 1-2 mm, hardly raised. Pods very densely puberulous or tomentose, not or very tardily glabrescent |
| 1' | Leaf-rachis puberulous or densely tomentose; petiolar gland 2-7(-9) mm long, raised. Pods puberulous, glabrescent |
| 2 | Main vein of leaflets distant by ⅓-¼ of the width of the leaflet from the front margin; lateral veins prominulous beneath |
| 2' | Main vein of leaflet distant by c. 1/5 of the width of the leaflet from the front margin, lateral veins inconspicuous to prominulous beneath |
