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Silene acaulis
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Silene acaulis
Silene acaulis, known as moss campion or cushion pink, is a small wildflower that is common all over the high arctic and tundra and in high mountains of Eurasia and North America (Alps, Carpathians, southern Siberia, Pyrenees, British Isles, Iceland, Faroe Islands, Greenland, Rocky Mountains). It is an evergreen perennial flowering plant in the carnation family Caryophyllaceae.
It is also called the compass plant, since the flowers appear first on the south side of the cushion. (Various other plants also have this name.)
Moss campion is a low, ground-hugging plant. It may seem densely matted and moss-like. The dense cushions are up to a foot or more in diameter. The bright green leaves are narrow, arising from the base of the plant. The dead leaves from the previous season persist for years, and pink flowers are borne singly on short stalks that may be up to 2.5 centimetres (1 inch) long, but are usually much shorter.
It usually has pink flowers, though very rarely they may be white. The flowers are solitary and star-shaped. The flowers are female, male or hermaphrodite. They are between 6–12 millimetres (1⁄4–1⁄2 in) wide, with hermaphrodite flowers being larger than the female ones. Female flowers produce better quality seeds than hermaphrodites and male flowers produce better quality pollen than hermaphrodites. The cushions can change the gender of their flowers between years. Gender frequencies change with altitude, the frequency of female flowers increasing with higher elevation. They usually appear in June through August. The flowers are held by a calyx which is rather firm and thick.
The sepals are joined together into a tube that conceals the bases of the petals, which are entire. The 10 stamens and 3 styles extend well beyond the throat of the flower. The stems and leaves are very sticky and viscid, which may discourage ants and beetles from climbing on the plant. The variety exscapa has shorter flowering stems. The other variety subacaulescens, from Wyoming and Colorado, has pale pink flowers all summer.
Plants in Colorado have been estimated to reach 75 to 100 years in age, and Alaskan plants may reach 300 years. The oldest known moss campion is 350 years old and has a diameter of two feet.
Moss campion is common all over the high arctic and the higher mountains of Eurasia and North America (south to the Alps, Carpathians, southern Siberia, Pyrenees, British Isles, Iceland, Faroe Islands, Rocky Mountains). In the United States it inhabits Colorado, the Bighorn Mountains of Wyoming, the Wallowa Mountains of Oregon, the Olympics, the northern Cascades of Washington, and Alaska.
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Silene acaulis
Silene acaulis, known as moss campion or cushion pink, is a small wildflower that is common all over the high arctic and tundra and in high mountains of Eurasia and North America (Alps, Carpathians, southern Siberia, Pyrenees, British Isles, Iceland, Faroe Islands, Greenland, Rocky Mountains). It is an evergreen perennial flowering plant in the carnation family Caryophyllaceae.
It is also called the compass plant, since the flowers appear first on the south side of the cushion. (Various other plants also have this name.)
Moss campion is a low, ground-hugging plant. It may seem densely matted and moss-like. The dense cushions are up to a foot or more in diameter. The bright green leaves are narrow, arising from the base of the plant. The dead leaves from the previous season persist for years, and pink flowers are borne singly on short stalks that may be up to 2.5 centimetres (1 inch) long, but are usually much shorter.
It usually has pink flowers, though very rarely they may be white. The flowers are solitary and star-shaped. The flowers are female, male or hermaphrodite. They are between 6–12 millimetres (1⁄4–1⁄2 in) wide, with hermaphrodite flowers being larger than the female ones. Female flowers produce better quality seeds than hermaphrodites and male flowers produce better quality pollen than hermaphrodites. The cushions can change the gender of their flowers between years. Gender frequencies change with altitude, the frequency of female flowers increasing with higher elevation. They usually appear in June through August. The flowers are held by a calyx which is rather firm and thick.
The sepals are joined together into a tube that conceals the bases of the petals, which are entire. The 10 stamens and 3 styles extend well beyond the throat of the flower. The stems and leaves are very sticky and viscid, which may discourage ants and beetles from climbing on the plant. The variety exscapa has shorter flowering stems. The other variety subacaulescens, from Wyoming and Colorado, has pale pink flowers all summer.
Plants in Colorado have been estimated to reach 75 to 100 years in age, and Alaskan plants may reach 300 years. The oldest known moss campion is 350 years old and has a diameter of two feet.
Moss campion is common all over the high arctic and the higher mountains of Eurasia and North America (south to the Alps, Carpathians, southern Siberia, Pyrenees, British Isles, Iceland, Faroe Islands, Rocky Mountains). In the United States it inhabits Colorado, the Bighorn Mountains of Wyoming, the Wallowa Mountains of Oregon, the Olympics, the northern Cascades of Washington, and Alaska.
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