Lennoa is a monotypic genus of flowering plants belonging to the family Boraginaceae.

It is found in the countries of Colombia, Costa Rica, Guatemala, Mexico, Nicaragua and Venezuela.

The oval mushroom-like stem is 5–15 cm (2–6 in) tall and is covered at maturity with small round,[4] or star-like flowers, which are lavender,[4] or violet with yellow throats.

[4] The genus name of Lennoa is in honour of Joaquín Leño, a Mexican independence fighter.

[1] The species has the Latin specific epithet of madreporoides which refers to the genus Madrepora (which in Latin means "mother of pores") and the Greco-Roman suffix -oides ("similar to"), due to its resemblance to this genus of corals.