The rose to pink flowers of Indigofera angustifolia grow in elongated racemes from leaf axils. The calyx is hairy as the outer corolla surfaces; sepal tips are narrowly pointed, awl-shaped.
The banner or upper petal of the corolla may be either rounded or pointed as the one in picture; the pair of narrow wing petals flanking the keel have central outward bulges, their tips rounded.
Flowering happens from late winter to midsummer (Bond and Goldblatt, 1984; Privett and Lutzeyer, 2010; JSTOR; iSpot).
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