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Arctic Mouse-ear

Cerastium nigrescens

Please keep in mind that it is illegal to uproot a plant without the landowner's consent and care should be taken at all times not to damage wild plants. Wild plants should never be picked for pleasure and some plants are protected by law.
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Plant Profile

Flowering Months:
Caryophyllaceae (Pink)
Life Cycle:
Annual or Perennial
Maximum Size:
15 centimetres tall
Cliffs, mountains, rocky places.

White, 5 petals
White flowers with notched petals. 10 stamens.
A cylindrical capsule, up to 1.5cm long.
A tufted perennial with fairly narrow, oval to oblong leaves. The dark green to reddish-brown tinged leaves are in opposite pairs and are covered in minute glandular hairs.
Other Names:
Arctic Mouse-ear Chickweed, Edmondston's Chickweed, Shetland Mouse-ear, Shetland Mouse-eared Chickweed.
Frequency (UK):

Similar Species

Other Information


Arctic mouse-ear, is a species of flowering plant in the carnation family. It is native to Arctic and subarctic regions of Europe, Asia, and North America. It is a small perennial herb that grows in cold, wet and nutrient poor habitats, such as tundra, rocky, and sandy soils. The plant has small, white, star-shaped flowers and hairy leaves and stems. The leaves are arranged in a basal rosette. It is considered a weed as it can grow rapidly and outcompete native plants, it can also cause problems for farmers as it can be a host for some plant pathogens.


Arctic Mouse-ear, also known as Cerastium nigrescens, is a small plant species that is found in the Arctic and Alpine regions. It is a member of the family Caryophyllaceae, which includes many other common flowering plants like carnations and pinks.

The plant is a low-growing perennial herb that can reach a height of up to 15 cm. It has small, white flowers that bloom in the summer months from June to August. The leaves of the plant are narrow and are covered in fine hairs, giving them a fuzzy texture. The stems of the plant are thin and wiry, allowing the plant to withstand harsh weather conditions and wind.

Arctic Mouse-ear is primarily found in rocky, alpine habitats with poor soil conditions. It can be found growing on rocky outcrops, talus slopes, and in gravelly areas. The plant is well adapted to survive in these harsh conditions, as it has a shallow root system that can quickly absorb any available moisture.

The plant is an important food source for many Arctic and alpine herbivores, such as caribou, muskox, and lemmings. The flowers and leaves are also edible for humans and can be used in salads or as a garnish.

Arctic Mouse-ear is an important indicator of climate change in the Arctic. As temperatures warm and permafrost melts, the plant is moving further north and at higher elevations. This has significant implications for the Arctic ecosystem, as the plant plays an important role in providing food and habitat for many other species.

In addition to its ecological importance, Arctic Mouse-ear has also been used in traditional medicine. The plant has been used to treat a variety of ailments, including respiratory infections, digestive disorders, and skin conditions.

Arctic Mouse-ear has several unique adaptations that allow it to thrive in harsh alpine and Arctic environments. One of its most notable adaptations is its ability to grow in nutrient-poor soil. The plant has a shallow root system that allows it to quickly absorb any available moisture and nutrients. It is also able to photosynthesize efficiently in low light conditions, which is necessary in the Arctic where daylight hours can be limited.

Another interesting adaptation of Arctic Mouse-ear is its fuzzy leaves, which help protect the plant from cold and windy conditions. The fine hairs on the leaves trap a layer of air next to the leaf surface, which acts as an insulating layer to protect the plant from freezing temperatures.

Arctic Mouse-ear is also known for its ability to reproduce rapidly, which is important in environments where the growing season is short. The plant produces seeds that are easily dispersed by wind or animals, allowing it to colonize new areas quickly.

Despite its hardy nature, Arctic Mouse-ear is still vulnerable to climate change. As temperatures warm and permafrost melts, the plant is moving further north and up higher elevations. This can lead to changes in the plant's distribution and abundance, which can have significant impacts on the Arctic ecosystem.

In recent years, there has been growing interest in the potential use of Arctic Mouse-ear in the development of new medicines. The plant contains a number of biologically active compounds, including flavonoids and alkaloids, that have been shown to have anti-inflammatory and antimicrobial properties.

In addition to its potential medicinal uses, Arctic Mouse-ear is also a popular ornamental plant in gardens and rockeries. Its low-growing habit and attractive white flowers make it a popular choice for alpine gardens and other rock gardens.

Arctic Mouse-ear has cultural significance for many Indigenous peoples in the Arctic. In Inuit culture, the plant is known as qilalugaq and is believed to have spiritual and medicinal properties. The Inuit have traditionally used the plant to treat respiratory illnesses, as well as to provide relief from sore muscles and joints. The plant is also used in traditional ceremonies and as a symbol of resilience and adaptation in the face of harsh environmental conditions.

Arctic Mouse-ear is also an important indicator species for monitoring the impacts of climate change in the Arctic. Changes in the plant's distribution and abundance can provide valuable information about how the Arctic ecosystem is responding to changing temperatures and other environmental factors.

Several conservation efforts are underway to protect Arctic Mouse-ear and other Arctic plant species from the impacts of climate change and other threats. One such effort is the Circumpolar Biodiversity Monitoring Program, which is a collaborative initiative between Arctic countries to monitor and conserve Arctic biodiversity.

In addition to climate change, other threats to Arctic Mouse-ear include habitat destruction from mining and oil and gas development, as well as invasive species that can outcompete native plants for resources. Efforts to protect and conserve Arctic Mouse-ear and other Arctic plant species will be essential to preserving the unique biodiversity of the Arctic ecosystem.

Overall, Arctic Mouse-ear is a fascinating and important plant species that plays a critical role in the Arctic ecosystem. Its unique adaptations, potential medicinal uses, and cultural significance make it a plant of great interest and importance to scientists, Indigenous peoples, and conservationists alike.

Distribution Map

Reproduced by kind permission of the BSBI.

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