| Leaves | clearly longer than peduncle; leaflets 3–5 pairs, ovate-orbicular to broadly ovate | clearly longer then peduncle; leaflets 2–4 pairs, elliptic or broadly ovate | clearly shorter then peduncle; leaflets 3–5 pairs, broadly ovate or ovate-orbicular |
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| Raceme | dense and globose, main axis not visible with 20–50 flowers | looser, clearly elongated, and globose, main axis visible with 10–15 flowers | looser, main axis visible with less than 15 flowers |
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| Flowers | flowers not pendulous, standard 13–18 mm long, sparselly hairy outside; keel 9–16 mm long | flowers pendulous, standart densely pubescens before, faller later, 14–19 mm long | flowers not pendulous, standard 9–10 mm long, glabrous; keel 9–10 mm long |
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| Fruit | glabrous with long seta | pubescent with long setae | pubescent with long setae |
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| Habitat | serpentine | calcareous steppe and slopes on sandstone | steppe, edge of fields and quercus forest |
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