godley's kōwhai of rocky riverbeds and scree

Size
Height: 8–12 m
Lifespan
100–200 years
Diet
Not applicable (tree)
Habitat
Lowland forests and scrub on mudstone, limestone, and other base-rich rocks. Prefers fertile, well-drained soils with full sun. Often found on steep, unstable slopes and river terraces.
Range
Found in central North Island from Taupō to the Ruahine Range. Most common on mudstone and other base-rich rocks. Restricted distribution. Endemic to New Zealand.
Endemism
Endemic
Main Threats
Habitat loss from land clearance is the primary threat. Browsing by introduced possums and deer. Climate change affecting forest habitats. No significant pest or disease issues.
Population
Populations are considered stable in remaining forest fragments. The species has a restricted distribution but is not considered threatened. It is listed as Not Threatened by NZPCN. It is threatened by ongoing habitat loss and browsing by possums. Protection of mudstone forest is critical for the species survival.
Conservation Status
Not Threatened
A new species, described in 2001. A tree that was hidden in plain sight. Godley kōwhai was previously grouped with Sophora microphylla, but it is different. It lacks a divaricating juvenile phase – the young tree grows straight, not tangled. It does not hide from the moa. It stands tall from the start. A tree that never learned to hide. The tree grows on mudstone and other base-rich rocks in the central North Island. It reaches 15 metres in height, with a single trunk and a spreading crown. The leaves are compound, with pairs of oval leaflets. The flowers are yellow, appearing in spring, hanging in clusters. A tree that blooms where the soil is rich. The species is named after botanist Dr Peter Godley, who studied the New Zealand flora for decades. It is a tree of the mudstone country, of the steep, unstable slopes, of the river terraces where the soil is rich. To see a Godley kōwhai is to see a tree that was hidden in plain sight. For years, it was mistaken for another species. Then the botanists looked closer, and they saw the differences. It is a reminder that the New Zealand bush still holds secrets. The hard, durable wood was used for making tools, weapons, and digging sticks. The flowers were a sign of spring. The bark was used in traditional medicines. The nectar from the flowers was collected as a sweet drink. Godley kōwhai is not a king. It is not a warrior. It is the hidden one, the one that was overlooked, the one that waited to be discovered. The mudstone slope is steep. The kōwhai grows, straight-trunked and tall, yellow flowers bright against the grey rock. It does not know it was hidden. It does not know it was mistaken for another tree. It just grows. It has been here for millennia. It will be here as long as the mudstone slopes remain.