Cerastium nigrescens

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Cerastium nigrescens
Edmondston's Chickweed, Keen of Hamar CRW 2437.JPG
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Caryophyllaceae
Genus: Cerastium
Species:
C. nigrescens
Binomial name
Cerastium nigrescens
(H.Watson) Edmondston ex H.Watson

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.

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.

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Shetland Archipelago in the Northern Atlantic

Shetland, also called the Shetland Islands and formerly Zetland, is a subarctic archipelago in the Northern Atlantic, between Great Britain, the Faroe Islands and Norway. It is the northernmost part of the United Kingdom, and lies 1° West of the Prime Meridian.

Caryophyllaceae Family of flowering plants

Caryophyllaceae, commonly called the pink family or carnation family, is a family of flowering plants. It is included in the dicotyledon order Caryophyllales in the APG III system, alongside 33 other families, including Amaranthaceae, Cactaceae, and Polygonaceae. It is a large family, with 81 genera and about 2,625 known species.

<i>Cerastium arcticum</i> Species of flowering plant

Cerastium arcticum, the Arctic mouse-ear chickweed or Arctic mouse-ear, is a flower distributed at parts of western and southern Greenland, Baffin Island, Labrador, Iceland, Scotland, Norway and Svalbard.

<i>Cerastium</i> Genus of flowering plants in the pink family Caryophyllaceae

Cerastium is a genus of annual, winter annual, or perennial plants belonging to the family Caryophyllaceae. They are commonly called mouse-ear chickweed. Species are found nearly worldwide but the greatest concentration is in the northern temperate regions. There are about 200 species. A number are common weeds in fields and on disturbed ground.

<i>Stellaria media</i> Species of flowering plant (chickweed)

Stellaria media, chickweed, is an annual and perennial flowering plant in the family Caryophyllaceae. It is native to Eurasia and naturalized throughout the world. This species is used as a cooling herbal remedy, and grown as a vegetable crop and ground cover for both human and poultry consumption. It is sometimes called common chickweed to distinguish it from other plants called chickweed. Other common names include chickenwort, craches, maruns, and winterweed. The plant germinates in autumn or late winter, then forms large mats of foliage.

Thomas Edmondston British botanist (1825–1846)

Thomas Edmondston (1825–1846) was a British-born botanist, born in Buness, Unst.

<i>Cerastium glomeratum</i> Species of flowering plant in the pink family Caryophyllaceae

Cerastium glomeratum is a species of flowering plant in the family Caryophyllaceae known by the common names sticky mouse-ear chickweed and clammy chickweed. It is probably native to Eurasia but it is known on most continents as an introduced species. It grows in many types of habitat. The blooming period is February, March, April, and May.

<i>Cerastium arvense</i> Species of flowering plant in the pink family Caryophyllaceae

Cerastium arvense is a species of flowering plant in the pink family known by the common names field mouse-ear and field chickweed. It is a widespread species, occurring throughout Europe and North America, as well as parts of South America. It is a variable species. There are several subspecies, but the number and defining characteristics are disputed.

<i>Cerastium alpinum</i> Species of flowering plant in the pink family Caryophyllaceae

Cerastium alpinum, commonly called alpine mouse-ear or alpine chickweed, is a mat-forming perennial plant. The species was first described by Carl Linnaeus in 1753. It is native to Greenland, Canada and northern Europe. It is grown as a rock garden subject for its many small white flowers and silver haired stems and foliage. There are three subspecies.

<i>Cerastium brachypetalum</i> Species of flowering plant

Cerastium brachypetalum, commonly called gray chickweed, grey mouse-ear or gray mouse-ear chickweed, is a spring blooming annual plant species. It is native from Eurasia and introduced and naturalized in North America.

<i>Cerastium fontanum</i> Species of flowering plant in the pink family Caryophyllaceae

Cerastium fontanum, also called mouse-ear chickweed, common mouse-ear, or starweed, is a species of mat-forming perennial or, rarely, annual plant. It is native to Europe but introduced elsewhere. Its identifying characteristics are tear-shaped leaves growing opposite one another in a star pattern, hairy leaves, and small white flowers. Mouse-ear chickweed typically grows to 4"-8" tall and spreads horizontally along the ground via the formation of roots wherever the stem falls over and contacts the ground.

<i>Acaena magellanica</i> Species of plant

Acaena magellanica, commonly called buzzy burr or greater burnet, is a species of flowering plant whose range includes the southern tip of South America and many subantarctic islands.

<i>Cerastium cerastoides</i> Species of flowering plant in the pink family Caryophyllaceae

Cerastium cerastoides, the mountain chickweed or starwort mouse-ear, is a flowering plant species in the pink family Caryophyllaceae found in the mountains of Europe.

<i>Cerastium aleuticum</i> Species of flowering plant in the pink family Caryophyllaceae

Cerastium aleuticum, common name Aleutian mouse-ear chickweed, is a plant species endemic to the US State of Alaska. It is found only on islands, not on the Alaskan mainland: Aleutian, St. Lawrence, St. Paul, Popof, and Kodiak Islands. It is found on rocky slopes and mountainsides up to an elevation of 700 m.

<i>Cerastium pumilum</i> Species of flowering plant in the pink family Caryophyllaceae

Cerastium pumilum, the dwarf mouse-ear or European chickweed, is an annual or biannual herbaceous plant, between 2 and 20 cm. high, native to Central and western Europe. The petals of the white flowers are shorter or equally long as the sepals, and split in the middle, up to a quarter of the length. The fruit petioles stand diagonal to the stems, often bent over at their top. Flowering occurs between March and May. Rarely occurs on the seacoast.

<i>Cerastium diffusum</i> Species of flowering plant in the pink family Caryophyllaceae

Cerastium diffusum, the fourstamen chickweed or sea mouse-ear, is a species of flowering plant in the pink and carnation family Caryophyllaceae. It is an annual herb, to 30 cm.high, occurring in western Europe and northern Africa. Found mainly in coastal areas of Algeria, the Baleares, Belgium, Corsica, Denmark, France, the Faroe Islands, Germany, Great Britain, Ireland, Italy, Libya, Morocco, Netherlands, Norway, Portugal, Sardinia, Sicily, Spain and Sweden. The flowers have 4, petals, 4 or 5 stamens appearing between March and May. The petals are much shorter than the sepals. The leaves are opposite, (sessile) without petioles and the sepals and bracts are all green, without pale margins. The fruit petioles are erect and diffuse at maturity.

Scythris siccella is a moth of the family Scythrididae first described by the German entomologist Philipp Christoph Zeller in 1839, found in Europe.

<i>Cerastium holosteoides</i> Species of flowering plant

Cerastium holosteoides, the common mouse-ear chickweed, is a species of flowering plant belonging to the family Caryophyllaceae.

<i>Cerastium subtriflorum</i> Species of plant

Cerastium subtriflorum, the Slovenian mouse-ear chickweed, is a perennial plant species in the family Caryophyllaceae. It is mostly restricted to the Slovenian and Italian Alps.

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