Cerastium nigrescens, commonly known as the Shetland mouse-ear, Shetland mouse-eared chickweed or Edmondston's chickweed, is an endemicflowering plant found in Shetland, Scotland.
It was first recorded in 1837 by botanist Thomas Edmondston, who was 12 at the time. For a long time it was synonymised with arctic mouse-ear Cerastium arcticum but it is now widely regarded as a separate species.[citation needed] Although reported from two other sites in the 19th century, it currently grows only on two serpentine hills on the island of Unst (see Keen of Hamar).
The numbers of Cerastium nigrescens can vary dramatically from year to year, for reasons that are unclear (probably due to a varying rates of seedling germination and survival), but the underlying trend seems stable, and there has been no change in its distribution.
Mature plants may be not much more than a single shoot with one flower or can be a fist-sized cushion with as many as 40 flowers. Flowers look disproportionately large compared with the size of the plant.
ReferencesEdit
Scott, W. & Palmer, R. 1987. The Flowering Plants and Ferns of the Shetland Islands. Shetland Times, Lerwick.
Scott, W. Harvey, P., Riddington, R. & Fisher, M. 2002. Rare Plants of Shetland. Shetland Amenity Trust, Lerwick.
External linksEdit
Media related to Cerastium nigrescens at Wikimedia Commons
Data related to Cerastium nigrescens at Wikispecies
This article related to Shetland is a stub. You can help Wikipedia by expanding it.
cerastium, nigrescens, commonly, known, shetland, mouse, shetland, mouse, eared, chickweed, edmondston, chickweed, endemic, flowering, plant, found, shetland, scotland, scientific, classificationkingdom, plantaeclade, tracheophytesclade, angiospermsclade, eudi. Cerastium nigrescens commonly known as the Shetland mouse ear Shetland mouse eared chickweed or Edmondston s chickweed is an endemic flowering plant found in Shetland Scotland Cerastium nigrescensScientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade EudicotsOrder CaryophyllalesFamily CaryophyllaceaeGenus CerastiumSpecies C nigrescensBinomial nameCerastium nigrescens H Watson Edmondston ex H WatsonIt was first recorded in 1837 by botanist Thomas Edmondston who was 12 at the time For a long time it was synonymised with arctic mouse ear Cerastium arcticum but it is now widely regarded as a separate species citation needed Although reported from two other sites in the 19th century it currently grows only on two serpentine hills on the island of Unst see Keen of Hamar The numbers of Cerastium nigrescens can vary dramatically from year to year for reasons that are unclear probably due to a varying rates of seedling germination and survival but the underlying trend seems stable and there has been no change in its distribution Mature plants may be not much more than a single shoot with one flower or can be a fist sized cushion with as many as 40 flowers Flowers look disproportionately large compared with the size of the plant References EditScott W amp Palmer R 1987 The Flowering Plants and Ferns of the Shetland Islands Shetland Times Lerwick Scott W Harvey P Riddington R amp Fisher M 2002 Rare Plants of Shetland Shetland Amenity Trust Lerwick External links Edit Media related to Cerastium nigrescens at Wikimedia Commons Data related to Cerastium nigrescens at Wikispecies This article related to Shetland is a stub You can help Wikipedia by expanding it vte This Caryophyllaceae article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Cerastium nigrescens amp oldid 1094465566, wikipedia, wiki, book, books, library,