Photo: Indigofera tinctoria.

Branch. Marburg bot.g., Germany. Planted. 2006-10-02.
Indigofera tinctoria L. Engl.: true indigo, Indian indigo, indigo. Deu.: Indigo. Sven.: indigo. Bot. syn.: Anila tinctoria (L.) Kuntze var. normalis Kuntze, Indigofera cinerascens DC., Indigofera indica Lam., Indigofera sumatrana Gaertn.
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Photo: Indigofera tinctoria.