Hoheria lyallii, the mountain lacebark, is a species of flowering plant in the mallow family Malvaceae, native to New Zealand, where it grows on drier mountainous areas of South Island — mainly in eastern Canterbury and Marlborough.

Growing to 7 m (23 ft), it is a deciduous shrub or small tree with hairy leaves and slightly scented white flowers in summer.

[3] The Latin specific epithet lyallii honours the Scottish naturalist and explorer David Lyall (1817–1895).

[3] In cultivation in the United Kingdom this plant has gained the Royal Horticultural Society's Award of Garden Merit.

[4][5] Hoheria lyallii and Hoheria glabrata (which has a similar appearance) are known in Māori as houi, and were likely used as textiles by South Island Māori.