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Key to Indigofera

Fabaceae

Indigofera

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(c) Hall, Joshua
1 Leaves pinnately 3-foliolate.
  2 Stem pubescence simple, pilose and spreading
  2 Stem pubescence of T-shaped (medifixed) hairs, white, appressed
(c) Campos, Aidan
1 Leaves odd-pinnately compound, with 5+ leaflets.
(c) Wallace, Damien - CC-BY
(c) Fuller, Richard - CC0
    3 Leaflets borne alternately or irregularly on the rachis; prostrate or ascending herbs.
      4 Stipules subulate, < 1.5 mm wide; legumes divergent to deflexed, spaced on the rachis; flowers 6-10 per inflorescence
(c) Weakley, Alan
    3 Leaflets borne opposite on the rachis; mat-forming or ascending herbs, upright, bushy-branched herbs, or shrubs.
(c) Dasher, Leila - CC-BY
        5 Creeping, decumbent or ascending herbs; leaflets (3) 5-11 per leaf.
© Scott Ward
© Scott Ward
          6 Stem pubescence strigose-appressed; leaflets (3-) 5 per leaf.
          6 Stem pubescence hirsute or pilose with long brownish hairs; leaflets 5-11 per leaf.
(c) jhall3387 - CC-BY-NC
             7 Hairs of stem glandular; fruits spreading; leaflets (5-) 9-11 per leaf
(c) Dasher, Leila - CC-BY
             7 Hairs of stem non-glandular, brownish; fruits deflexed; leaflets 5-9 per leaf
(c) Weakley, Alan - CC0
        5 Erect, bushy-branched suffruticose herbs or shrubs; leaflets (7-) 9-15 per leaf.
(c) Dasher, Leila - CC-BY
               8 Plants shrubs (sometimes low-growing plants can superficially appear as sprawling vines); leaflets 20-75 (-100) mm long; corollas 12-18 mm long, bright pink or bright purple
               8 Plants herbaceous or suffrutescent; corollas 5-9 mm long, cream, rose, tan, yellow, greenish, orange, or purplish.
                 9 Legume 7-9 mm long, ovoid, not falcate, indehiscent, with 2-3 seeds; corolla 6-9 mm long; [native species]
                 9 Legume 15-36 mm long, linear-cylindric, slightly to strongly falcate, dehiscent, with 3-12 or more seeds; corolla 5-6 mm long; [introduced species].