Caryophyllaceae
Mouse-ear chickweed
Cerastium arcticum
- Family
- Caryophyllaceae
- Genus
- Cerastium
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Common names
By language (6)
- English
- Mouse-ear chickweed, Arctic mouse-ear, Arctic chickweed
- Finnish
- Jäämerenhärkki, Napakellohärkki
- Icelandic
- Fjallafræhyrna
- Norwegian Bokmål
- Tundraarve
- Swedish
- Svalbardarv
- Welsh
- Clust-y-llygoden Ogleddol
Synonyms
- Cerastium alpinum var. procerum Lange
- Cerastium alpinum var. uniflorum Durand
- Cerastium arcticum subsp. hyperboreum (Tolm.) Böcher
- Cerastium arcticum subsp. procerum (Lange) Böcher
- Cerastium arcticum var. arcticum
- Cerastium arcticum var. procerum (Lange) Hultén
- Cerastium arcticum var. vestitum Hultén
- Cerastium hyperboreum Tolm.
- Cerastium latifolium Hartm.
- Cerastium nigrescens subsp. arcticum (Lange) P.S.Lusby
Flowers
- In flower
- July to August (from 67 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Canada: native, Greenland: native
Photos
FlowerPhoto: Paul Prior, CC BY 4.0, from iNaturalist 
FlowerPhoto: anasacuta, CC BY 4.0, from iNaturalist 
FlowerPhoto: Ingvild Riska, CC BY 4.0, from iNaturalist 
FlowerPhoto: Ingvild Riska, CC BY 4.0, from iNaturalist 
Photo: Wikimedia Commons contributor, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Pål A. Olsvik, CC BY 4.0, from iNaturalist 
Photo: Kim Hansen, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Kirsten, CC BY 4.0, from iNaturalist 
Photo: Kim Hansen, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Bjoertvedt, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Bjoertvedt, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Bjoertvedt, CC BY-SA 3.0, from Wikimedia Commons
More in Cerastium
- Sticky chickweedCerastium glomeratumCaryophyllaceae
- Field chickweedCerastium arvenseCaryophyllaceae
- Common mouse-ear chickweedCerastium fontanumCaryophyllaceae
- Alpine chickweedCerastium alpinumCaryophyllaceae
- Gray chickweedCerastium brachypetalumCaryophyllaceae
- Little mouse-earCerastium semidecandrumCaryophyllaceae
- Snow in summerCerastium tomentosumCaryophyllaceae
- European chickweedCerastium pumilumCaryophyllaceae
- Fourstamen chickweedCerastium diffusumCaryophyllaceae
- Boreal chickweedCerastium biebersteiniiCaryophyllaceae
- Cerastium sylvaticumCaryophyllaceae
- Cerastium latifoliumCaryophyllaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.