Weinmannia silvicola, known as Tōwai or Tawhero, a medium-sized tree

Tree

A tree is a perennial woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or trunk with clear apical dominance. A minimum height specification at maturity is cited by some authors, varying from 3 m to...

 of the family Cunoniaceae

Cunoniaceae

The Cunoniaceae is a family of 26 genera and about 350 species of woody plants in the Antarctic flora, with many laurifolia species with glossy leaves endemic to laurel forest habitat. The family is native to Australia, New Caledonia, New Guinea, New Zealand, southern South America, the Mascarene...

, is a very common tree in the north of the North Island

North Island

The North Island is one of the two main islands of New Zealand, separated from the much less populous South Island by Cook Strait. The island is in area, making it the world's 14th-largest island...

 of New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

, occurring in forest and forest margins from North Cape

North Cape, New Zealand

North Cape is located at the northern end of the North Auckland Peninsula in the North Island of New Zealand . It is the northeastern tip of the Aupouri Peninsula and lies 30 km east of Cape Reinga. The name is sometimes used to refer just to the cape which is known in Māori as Otou and which...

 south to the Waitakere Ranges

Waitakere Ranges

The Waitakere Ranges are a chain of hills in the Auckland metropolitan area, generally running approximately 25 km from north to south, 25 km west of central Auckland, New Zealand. The maximum elevation within the ranges is 474 m...

 west of Auckland

Auckland

The Auckland metropolitan area , in the North Island of New Zealand, is the largest and most populous urban area in the country with residents, percent of the country's population. Auckland also has the largest Polynesian population of any city in the world...

. Tōwai grows up to 15 metres tall or more, with a trunk up to 1 metre in diameter.

A closely related tree, Kāmahi (W. racemosa

Weinmannia racemosa

Weinmannia racemosa, Kāmahi, a medium-sized tree of the family Cunoniaceae, is a very common tree in New Zealand, occurring in lowland, montane, and subalpine forests and shrubland from the central North Island south to Stewart Island....

), replaces tōwai south of latitude 38°S

38th parallel south

The 38th parallel south is a circle of latitude that is 38 degrees south of the Earth's equatorial plane. It crosses the Atlantic Ocean, the Indian Ocean, Australia, New Zealand, the Pacific Ocean, and the southern end of South America, including the Andes Mountains and Patagonia.At this latitude...

.

Further reading

• Metcalf, Laurie, 2002. A Photographic Guide to Trees of New Zealand. Tāmaki-makau-rau: New Holland.
• Salmon, J.T., 1986. The Native Trees of New Zealand. Te Whanga-nui-a-Tara: Heinneman Reed.