thread moss with wiry stems forming loose mats on bare soil
- Size
- Height: 1–3 cm
- Lifespan
- 3–7 years
- Diet
- Grows on damp soil, rotting logs, and stream banks in shaded forests. Requires consistent moisture, rich organic soil, and protection from direct sunlight. Forms thread-like, creeping mats of pale green to yellowish-green.
- Habitat
- Grows in disturbed, open habitats on bare soil, banks, and walls. Forms loose, sprawling mats of fine, wiry, reddish-green stems.
- Range
- Found throughout the North and South Islands on damp soil, rotting logs, and stream banks in shaded forests. Most common in lowland and montane forests with consistent moisture. Also found in temperate regions worldwide.
- Endemism
- Native
- Main Threats
- None significant. This species is common and widespread. Localised threats include forest clearance, stream modification, and climate change reducing forest floor moisture.
- Population
- Not Threatened. Thread moss is one of the most common and widespread mosses in the world, found on every continent. In New Zealand, it is common in disturbed habitats throughout the country, particularly in urban areas and on agricultural land.
- Conservation Status
- Not Threatened
The one that looks like someone spilled a box of green thread has stems that are thin, wiry, and sprawling, reaching 1 to 3 centimetres in length. The leaves are small, oval-shaped, and arranged in a loose spiral around the stem. The colour is reddish-green to bright green, often with a reddish tinge at the base. It forms loose, sprawling mats that weave through the soil, threading their way between grass blades and through cracks in the pavement. It is the moss of the tangled thread, the one that looks like it has been scattered by a careless hand.
What makes it special is the threadiness. Thread moss is one of the most delicate-looking mosses in New Zealand. Its stems are thin and wiry, like fine thread or fishing line. The leaves are small and sparse, giving the plant an open, airy appearance. It does not form dense cushions like other mosses. It sprawls, creeps, and threads its way through the soil, weaving a loose green web over the ground. It is the moss of the delicate web, the one that is easy to overlook but impossible to ignore once you see it.
The leaves are oval-shaped with a pointed tip, and they have a long, hair-like tip (awn) that extends beyond the leaf tip. These awns give the leaves a bristly, thread-like appearance, adding to the overall delicacy of the plant. Under a hand lens, the awns are visible, tiny glassy threads extending from the leaf tips.
Biologically, the thread moss reproduces by spores, released from capsules on short stalks. The capsules are pear-shaped and drooping, hanging from the stem like tiny bells. It also reproduces by fragmentation, pieces broken off can grow into new plants. It is a pioneer species, often one of the first mosses to colonise bare ground.
To find thread moss is to find the fine, wiry web on the bare soil. It is thin, thread-like, and sprawling, a living embroidery on the ground. You can see the way it weaves through the soil, the way it threads between grass blades. It is the moss of the tangled thread, the one that looks like someone spilled a box of green thread and left it to grow, the one that proves that the most delicate things can be the toughest.