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Key to Indigofera
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=39921
1 Leaves pinnately 3-foliolate. | |
1 Leaves odd-pinnately compound, with 5+ leaflets. | |
4 Stipules deltate to lanceolate, 2-3 mm wide; legumes deflexed, crowded on the rachis; flowers many per inflorescence. | |
5 Staminal tube 3-3.5 (-5) mm long, about as long as the calyx; leaves with 5-8 leaflets; leaflets 1.2-2.5× as long as wide; legumes tan, deflexed to spreading, straight; infructescence < 10 cm long | |
6 Erect, bushy-branched suffruticose herbs or shrubs; leaflets (7-) 9-15 per leaf. | |
9 Herb or suffrutescent herb; corollas 5-9 mm long, cream, rose, tan, yellow, greenish, orange, or purplish. | |
10 Legume 7-9 mm long, ovoid, not falcate, indehiscent, with 2-3 seeds; corolla 6-9 mm long; [native species] | |