I have not found pods of this Indigofera but am on the look out for them for you
F.M.B.
Indigofera
Please cite as “FVM-75-00-00c,” in Correspondence of Ferdinand von Mueller, edited by R.W. Home, Thomas A. Darragh, A.M. Lucas, Sara Maroske, D.M. Sinkora†, J.H. Voigt† and Monika Wells accessed on 28 March 2024, https://epsilon.ac.uk/view/vonmueller/letters/75-00-00c