Saxifraga oppositifolia
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Saxifraga oppositifolia, the purple saxifrage or purple mountain saxifrage,[1] is a species of plant that is very common in the high Arctic and also some high mountainous areas further south, including northern Britain, the Alps and the Rocky Mountains.
Saxifraga oppositifolia grows at a latitude of 83°40'N on Kaffeklubben Island, making it one of the northernmost plants in the world.
Description
Saxifraga oppositifolia is a low-growing, densely or loosely matted plant growing up to Script error: No such module "convert". high, with somewhat woody branches of creeping or trailing habit close to the surface. The leaves are small, rounded, scale-like, opposite in four rows with ciliated margins. The flowers are solitary on short stalks, petals purple or lilac, much longer than the calyx lobes. It is one of the first spring flowers, continuing to flower during the whole summer in localities where the snow melts later. The flowers grow to about Script error: No such module "convert". in diameter.
Ecology
Habitat
Saxifraga oppositifolia grows in all kinds of cold temperate to Arctic habitats, usually found from sea level up to Script error: No such module "convert"., in many places colouring the landscape. Its native habitats include tundra, arctic coastal bluffs, alpine scree, and rock crevices.[2]
Swiss botanist Christian Körner found the plant growing at an elevation of Script error: No such module "convert". in the Swiss alps, making it the highest elevation angiosperm in Europe.[3] It is even known to grow on Kaffeklubben Island in north Greenland,[4] at Script error: No such module "Coordinates"., the most northerly plant locality in the world.
Species interactions
The flowers of Saxifraga oppositifolia may be consumed by certain animal species, such as the caterpillars of the cold-adapted Gynaephora groenlandica, the Arctic woolly-bear caterpillar.[5]
Uses
Saxifraga oppositifolia is a popular plant in alpine gardens, though difficult to grow in warm climates.
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The edible flower petals are eaten, particularly in parts of Nunavut without abundant berries. They are bitter at first but then become sweet. They are also slightly sticky.
It is known to the Inuit as Script error: No such module "Lang".. The leaves and stems are brewed for herbal tea: According to many Nunavummiut, the tea is best later in the season once the flowers have died.[6]
Saxifraga oppositifolia serves as the territorial flower of Nunavut in Canada,[6] a symbolic flower of Nordland county in Norway, and the county flower of County Londonderry in Northern Ireland.
Taxonomy
There are a few subspecies of Saxifraga oppositifolia, including:
- Saxifraga oppositifolia ssp. glandulisepala Hultén – native to Alaska[7]
- Saxifraga oppositifolia ssp. oppositifolia L. – native to continental US[8]
- Saxifraga oppositifolia ssp. smalliana (Engl. & Irmsch.) Hultén – native to Alaska[9]
References
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- ↑ Kukal, Olga; Dawson, Todd E. (1989-06-01). "Temperature and food quality influences feeding behavior, assimilation efficiency and growth rate of arctic woolly-bear caterpillars". Oecologia. 79 (4): 526–532. doi:10.1007/BF00378671. ISSN 0029-8549.
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