''Sabulina rubella'' is a species of flowering plant in the family

Caryophyllaceae 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, Cactacea ...

known by several common names, including beautiful sandwort, mountain sandwort, Arctic sandwort, and boreal stitchwort. It has a circumboreal distribution, occurring throughout the northernmost Northern Hemisphere from the

Arctic Circle The Arctic Circle is one of the two polar circles, and the most northerly of the five major circles of latitude as shown on maps of Earth. Its southern equivalent is the Antarctic Circle. The Arctic Circle marks the southernmost latitude at w ...

on the Arctic tundra into the

alpine climate Alpine climate is the typical weather (climate) for elevations above the tree line, where trees fail to grow due to cold. This climate is also referred to as a mountain climate or highland climate. Definition There are multiple definitions of ...

s of mountainous areas in temperate Eurasia and North America. It grows in rocky, moist, often barren habitat, including gravelly, sparsely vegetated slopes with little organic matter.Brysting, A. K., et al. (2001 onwards)
Caryophyllaceae of the Canadian Archipelago: ''Minuartia rubella''
It is a

calciphile A calcicole, calciphyte or calciphile is a plant that thrives in lime rich soil. The word is derived from the Latin 'to dwell on chalk'. Under acidic conditions, aluminium becomes more soluble and phosphate less. As a consequence, calcicoles grown ...

, growing in

calcareous Calcareous () is an adjective meaning "mostly or partly composed of calcium carbonate", in other words, containing lime or being chalky. The term is used in a wide variety of scientific disciplines. In zoology ''Calcareous'' is used as an adje ...

substrates such as soils rich in decomposed

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

.Flora of North America
/ref> This is a small, mat-forming perennial herb growing in a low, tight clump of hairy, glandular herbage. The green, three-veined leaves are needlelike or flattened, no more than a centimeter long and a millimeter wide. The plant blooms in summer with tiny flowers made up of pointed

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined b ...

s under 4 millimeters long and five white petals roughly the same length or slightly smaller.

References

External links

''Sabulina rubella''
Jepson eFlora
Photo gallery

rubella Rubella, also known as German measles or three-day measles, is an infection caused by the rubella virus. This disease is often mild, with half of people not realizing that they are infected. A rash may start around two weeks after exposure and ...

Alpine flora Flora of Canada Flora of the Western United States Flora of Alaska Flora of California Flora of the Sierra Nevada (United States) Flora of Norway Flora of Finland Flora of Sweden Plants described in 1812 Flora without expected TNC conservation status Taxa named by Göran Wahlenberg {{Caryophyllaceae-stub