the tiny carpet plant of NZ's subalpine fell-fields

Size
Height: 1–3 cm
Lifespan
3–5 years
Diet
Not applicable (groundcover). Photosynthetic.
Habitat
Coastal cliffs, damp grassland, stream banks, lake margins and open areas. Prefers moist, well-drained soils with full sun to partial shade. Tolerates damp conditions and moderate frost.
Range
Throughout New Zealand from Northland to Stewart Island. Most common in coastal and lowland areas. Widespread in open, damp habitats. Also found in Australia and South America.
Endemism
Native
Main Threats
Habitat loss from land clearance is the primary threat. Competition from introduced weeds. Climate change affecting wetland habitats. Protection of damp grassland is important.
Population
Populations are considered stable and widespread. The species is common in damp areas throughout New Zealand. It is threatened by competition from introduced weeds. No formal conservation assessment exists.
Conservation Status
Not Threatened
A tiny, creeping groundcover with small, fern-like leaves and masses of tiny, button-like yellow flowers in summer. A plant that makes a carpet of green and gold. The leaves are finely divided, bright green, and soft to the touch. They form dense, tight mats that look like a green carpet. The plant spreads by creeping stems that root at the nodes, slowly covering the ground. A plant that takes its time. The flowers are the plant's most distinctive feature. They are small, yellow, and button-like, held on short stalks above the leaves. They appear in summer and are attractive to small insects. The flowers are followed by small, dry fruits containing the seeds. A plant that blooms low to the ground. Button Carpet is perfect for planting between paving stones, in rock gardens, or as a lawn substitute in small areas. It tolerates light foot traffic, making it suitable for pathways. The dense, tight mat suppresses weeds and provides a soft, green surface. A plant that can be walked on. The plant is very hardy and easy to grow. It tolerates a range of conditions, from coastal cliffs to damp grassland. It prefers moist, well-drained soils but can survive short dry periods. The tiny leaves reduce water loss, allowing the plant to survive in exposed sites. To find Button Carpet is to look in damp grassland and along stream banks. It is a plant of the open places, a groundcover of the damp edge. The path is stone. The button carpet spreads between the cracks, green and tight, yellow flowers bright against the grey. A foot steps. The carpet springs back. It has been stepped on before. It will be stepped on again. It does not mind.