grows where the antarctic winds blow

Size
Height: 1-3 cm, Diameter: up to 10 cm
Lifespan
Perennial
Diet
Not applicable as this is autotrophic. Photosynthetic cushion plant. Obtains nutrients from thin, rocky soils. Tolerates extreme cold.
Habitat
Alpine and subantarctic areas. Grows on rocky slopes, scree, and exposed ridges. Tolerates extreme cold, wind, and poor soils.
Range
Native to New Zealand (alpine South Island and subantarctic islands), South America (Andes), and Antarctica.
Endemism
Native
Main Threats
Climate change is a long-term threat. Alpine habitats are warming. Antarctic populations may be affected by ice melt.
Population
Found in New Zealand's subantarctic islands and alpine South Island. Also found in South America and Antarctica. Not threatened.
Conservation Status
data_deficient
Human Risk
harmless
Handling Note
native/alpine ground cover, safe to handle
Conservation Note
Native herb found in subantarctic islands; data insufficient for full threat classification in NZ context.
Assessment
NZTCS Vascular Plants (2023)
Te Ao Māori
Colobanthus quitensis has no recognised Māori name. It grows in alpine areas and subantarctic islands. Places not heavily used by Māori. Its Antarctic connection is remarkable. It is a plant of the ice edge.
Cold defines its limits. Antarctic pearlwort is a tiny cushion-former. It looks like moss but is not. It is tough as old boots. Colobanthus quitensis is one of only two flowering plants native to Antarctica. It survives the coldest, windiest, driest continent on Earth. In New Zealand, it grows in alpine areas and subantarctic islands. Living at the edge of possibility. The leaves are small and narrow. Crowded together in dense cushions. They are bright green. Almost glowing against the grey rock. The flowers are tiny, white, and star-shaped. Almost invisible without a hand lens. The fruit is a small capsule. Colobanthus quitensis grows on rocky slopes. In scree. On exposed ridges. It likes places where nothing else can grow. It is a pioneer. The first to colonise bare ground. The species is found in New Zealand, South America, and Antarctica. It is one of the few plants to grow on two continents and the ice continent. The name quitensis refers to Quito. The capital of Ecuador. Near where the type specimen was collected. The plant has since travelled far. In the alpine zone, Antarctic pearlwort is an important pioneer. It stabilises scree. It creates microhabitats for other plants. Antarctic pearlwort is not threatened. It is adaptable. It is tough. It survives where others die. Climate change is a threat to its Antarctic populations. The continent is warming. The plant may be able to move. It may not. Colobanthus quitensis is a reminder. The toughest plants are the smallest. The most resilient are the most overlooked. It does not ask for much. Just rock and cold. And it takes both.