daisies up the windy coastal cliff tops
- Size
- Length: 1-6 mtr, Weight: 10-50 kg
- Lifespan
- Perennial
- Diet
- Not applicable - autotrophic. Photosynthetic shrub or small tree. Obtains nutrients from well-drained soils through root system. Tolerates salt spray and strong winds.
- Habitat
- Coastal cliffs, rocky outcrops, and open scrubland. Prefers well-drained soils and exposed positions with good air circulation and wind exposure.
- Range
- Endemic to New Zealand. Found in coastal and lowland areas of the North Island, South Island, and Stewart Island. Specific ranges vary by species from Northland to Otago.
- Endemism
- Endemic
- Main Threats
- Habitat loss from coastal development. Invasive weed species. Climate change affecting coastal cliff ecosystems. Some species have restricted ranges making them vulnerable to extinction.
- Population
- Genus resurrected in September 2025. Multiple species reclassified from Olearia and Pachystegia. Conservation status varies by species. Many are range-restricted and vulnerable to local threats.
- Conservation Status
- data_deficient
- Human Risk
- harmless
- Handling Note
- native shrub, safe to handle
- Conservation Note
- Endemic tree daisy; data insufficient for full threat classification.
- Assessment
- NZTCS Vascular Plants (2023)
- Te Ao Māori
- The Shawia genus carries no recognised Māori name, as it is a recent taxonomic construct. However, the species within this genus have long been known to Māori as tāwhiri or kūmara-dropping plants, depending on the region. These tree daisies were used for their wood and medicinal properties. The 2025 reclassification does not change their place in the forest, but it may change how they are understood.
In September 2025, Shawia returned. The genus had sat in the archives for decades, unused and overlooked. Now it is active. This resurrection marks one of the most recent taxonomic shifts in New Zealand botany.
The name Shawia replaces Olearia and Pachystegia for several species. Shawia insignis. Shawia minor. Shawia ilicifolia. Shawia cymbifolia. Shawia hectorii. These are coastal plants. They grow on cliffs, rocky outcrops, and windswept scrub. They are tough. They have white daisy flowers and leathery leaves. They look like the landscape they inhabit.
A paper published on 11 September 2025 used molecular phylogenetic analysis to untangle relationships within the daisy family. The results showed these species did not belong in their previous genera. They needed their own. The name Shawia was available. It had been proposed earlier but never adopted. The time had come.
Shawia is named for someone. The details are in the paper. What matters is that the name is now legitimate. A herbarium label written today will say Shawia. Field guides printed next year will need updating. Databases will be revised. Taxonomy is like that. Nothing stays still.
These tree daisies are found from Northland to Otago. They prefer exposed places. Shawia insignis grows on coastal cliffs in the North Island. Shawia hectorii is found in drier areas. Each species has its own range and threats. They share a common habitat: places where other plants struggle.
The resurrection of Shawia is not just an academic exercise. Names matter. A plant called Shawia is recognised as distinct from Olearia. That distinction has implications for conservation and understanding evolutionary history.
Some Shawia species are common. Others are rare. Shawia cymbifolia, with its boat-shaped leaves, is restricted to a few locations. Habitat loss and invasive weeds are threats. The new classification will not change that. But it might change how people see these plants. Not just daisies. Shawias.
The flowers appear in spring and summer. White petals. Yellow centres. Clustered at the tips of branches. The leaves are tough, often with rolled-under edges, an adaptation to wind and salt spray. The plants are shrubs or small trees, sometimes reaching several metres tall.
If you walk along a coastal cliff in the North Island and see a white-flowered shrub with leathery leaves, you might be looking at a Shawia. You might be looking at a piece of taxonomic history. The name is new. The plant is ancient.