Zygogynum howeanum, commonly known as hotbark or hot bark, is a species of plant in the family Winteraceae.

It is endemic to Australia’s subtropical Lord Howe Island in the Tasman Sea.

Its large, bluntly pointed leaves are dark green on the upper surface and paler beneath.

The fruit is a round black berry, 8 mm across, containing 5–15 small seeds.

[2][3] Occurring mainly in moist and sheltered parts of the forests of Lord Howe's southern mountains – Mounts Gower and Lidgbird – the species forms a distinctive component of the vegetation from sea level to the peaks.