Phyllocladus trichomanoides

Phyllocladus trichomanoides, commonly known as the tānekaha or celery pine, is a coniferous tree endemic to New Zealand.

Description

Tānekaha is a medium-sized forest tree growing up to in height and 1 m trunk diameter. The main structural shoots are green-skinned for 2–3 years, then turn brown as the bark thickens. The leaves are sparse, tiny, scale-like, 2–3 mm long, and only green for a short time, soon turning brown.
Most photosynthesis is performed by phylloclades, highly modified, leaf-like short shoots; these are arranged alternately, 10–15 on a shoot, the individual phylloclades rhombic, 1.5–2–5 cm long. The seed cones are berry-like, with a fleshy white aril surrounding but not fully enclosing the single seed.

Distribution

In the North Island, this species is found in lowland forests from Te Paki to 40°S. In the South Island, this species is found in northern Marlborough and Nelson to 41°30'S.

Pests and diseases

This species plays host to the New Zealand endemic beetle Agapanthida morosa.

Economic uses

Like the kauri, tānekaha shed their lower branches, producing smooth straight trunks and knot-free timber which is sought after for its strength.
The bark is rich in tannin, from which Māori extracted a red dye.