Bolusanthus speciosus (tree wisteria) is a species of flowering plants in the family Fabaceae.

Between September and October, when the tree has no leaves it begins to bloom, with lilac blue flowers.

[5] It is native to KwaZulu-Natal and Northern Provinces (of South Africa), Eswatini, Botswana, Malawi, Mozambique, Zambia and Zimbabwe.

[5] The genus name of Bolusanthus is in honour of Harry Bolus, (1834 – 1911) who was a South African botanist, botanical artist, businessman and philanthropist,[6] and 'anthus' the Greek word for flower.

It was first published and described by (Bolus) Hermann Harms (a German botanist) in Repert.