Artemisia norvegica
Encyclopedia
Artemisia norvegica is a species of flowering plant in the aster family
known by the common names alpine sagewort, boreal sagewort, mountain sagewort, Norwegian mugwort, arctic wormwood, and spruce wormwood. It is widespread in Eurasia and it occurs in western North America, mainly in the higher latitude
s, but also in high-elevation habitat as far south as California
and Colorado
.
This plant is a perennial subshrub
growing 20 to 60 cm (7.9 to 23.6 in) tall with erect stems growing from a caudex
and taproot
. Most of the leaves are located low on the stems and are 2 to 20 cm (0.78740157480315 to 7.9 in) long. The nodding inflorescence
bears flower heads
containing ray and disc florets. The ray florets are female with no functioning male parts and the disc florets at the center are bisexual
. The plant reproduces by seed and may spread vegetatively
by sending out stolon
s. The seeds are dispersed
on the wind.
This plant grows in subalpine
and alpine climate
s and in Arctic
habitat such as tundra
. It can be found in moraine
s, fell field habitat, alpine meadows, and areas dominated by grass
es and sedges
. In Alaska
it occurs on the fjord
s of Prince William Sound
alongside larkspur monkshood (Aconitum delphiniifolium), Eschscholtz's buttercup
(Ranunculus eschscholtzii), and Canadian burnet
(Sanguisorba canadensis). It grows on Alaskan mountains such as the Kenai Mountains
with grasses, sedges, and willows. In the alpine tundra
of the Rocky Mountains
it grows in snowbeds and on turf
made up of blackroot sedge (Carex elynoides) and alpine clover (Trifolium dasyphyllum). It occurs in the mountains of the Northwest Territories
among lichens and grasses such as arctic bluegrass (Poa arctica).
This species is food for a number of animals, such as mountain goat
s, which eat it during the summer in Alaska, as well as Sitka black-tailed deer
and hoary marmot
s.
This plant is a pioneer species
in the primary phase
of ecological succession
in disturbed areas, such as plains scoured by flooding. It has been known to colonize denuded soil in vehicle tracks. It was used to revegetate habitat disturbed during the construction of the Trail Ridge Road
in Colorado.
Asteraceae
The Asteraceae or Compositae , is an exceedingly large and widespread family of vascular plants. The group has more than 22,750 currently accepted species, spread across 1620 genera and 12 subfamilies...
known by the common names alpine sagewort, boreal sagewort, mountain sagewort, Norwegian mugwort, arctic wormwood, and spruce wormwood. It is widespread in Eurasia and it occurs in western North America, mainly in the higher latitude
Latitude
In geography, the latitude of a location on the Earth is the angular distance of that location south or north of the Equator. The latitude is an angle, and is usually measured in degrees . The equator has a latitude of 0°, the North pole has a latitude of 90° north , and the South pole has a...
s, but also in high-elevation habitat as far south as California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
and Colorado
Colorado
Colorado is a U.S. state that encompasses much of the Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains...
.
This plant is a perennial subshrub
Subshrub
A subshrub or dwarf shrub is a short woody plant. Prostrate shrub is a similar term.It is distinguished from a shrub by its ground-hugging stems and lower height, with overwintering perennial woody growth typically less than 10–20 cm tall, or by being only weakly woody and/or persisting...
growing 20 to 60 cm (7.9 to 23.6 in) tall with erect stems growing from a caudex
Caudex
A caudex is a form of stem morphology appearing as a thickened, short, perennial stem that is either underground or near ground level . It may be swollen for the purpose of water storage, especially in xerophytes...
and taproot
Taproot
A taproot is an enlarged, somewhat straight to tapering plant root that grows vertically downward. It forms a center from which other roots sprout laterally.Plants with taproots are difficult to transplant...
. Most of the leaves are located low on the stems and are 2 to 20 cm (0.78740157480315 to 7.9 in) long. The nodding inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...
bears flower heads
Head (botany)
The capitulum is considered the most derived form of inflorescence. Flower heads found outside Asteraceae show lesser degrees of specialization....
containing ray and disc florets. The ray florets are female with no functioning male parts and the disc florets at the center are bisexual
Plant sexuality
Plant sexuality covers the wide variety of sexual reproduction systems found across the plant kingdom. This article describes morphological aspects of sexual reproduction of plants....
. The plant reproduces by seed and may spread vegetatively
Vegetative reproduction
Vegetative reproduction is a form of asexual reproduction in plants. It is a process by which new individuals arise without production of seeds or spores...
by sending out stolon
Stolon
In biology, stolons are horizontal connections between organisms. They may be part of the organism, or of its skeleton; typically, animal stolons are external skeletons.-In botany:...
s. The seeds are dispersed
Biological dispersal
Biological dispersal refers to species movement away from an existing population or away from the parent organism. Through simply moving from one habitat patch to another, the dispersal of an individual has consequences not only for individual fitness, but also for population dynamics, population...
on the wind.
This plant grows in subalpine
Subalpine
The subalpine zone is the biotic zone immediately below tree line around the world. Species that occur in this zone depend on the location of the zone on the Earth, for example, Snow Gum in Australia, or Subalpine Larch, Mountain Hemlock and Subalpine Fir in western North America.Trees in the...
and alpine climate
Alpine climate
Alpine climate is the average weather for a region above the tree line. This climate is also referred to as mountain climate or highland climate....
s and in Arctic
Arctic
The Arctic is a region located at the northern-most part of the Earth. The Arctic consists of the Arctic Ocean and parts of Canada, Russia, Greenland, the United States, Norway, Sweden, Finland, and Iceland. The Arctic region consists of a vast, ice-covered ocean, surrounded by treeless permafrost...
habitat such as tundra
Tundra
In physical geography, tundra is a biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra comes through Russian тундра from the Kildin Sami word tūndâr "uplands," "treeless mountain tract." There are three types of tundra: Arctic tundra, alpine...
. It can be found in moraine
Moraine
A moraine is any glacially formed accumulation of unconsolidated glacial debris which can occur in currently glaciated and formerly glaciated regions, such as those areas acted upon by a past glacial maximum. This debris may have been plucked off a valley floor as a glacier advanced or it may have...
s, fell field habitat, alpine meadows, and areas dominated by grass
Grass
Grasses, or more technically graminoids, are monocotyledonous, usually herbaceous plants with narrow leaves growing from the base. They include the "true grasses", of the Poaceae family, as well as the sedges and the rushes . The true grasses include cereals, bamboo and the grasses of lawns ...
es and sedges
Carex
Carex is a genus of plants in the family Cyperaceae, commonly known as sedges. Other members of the Cyperaceae family are also called sedges, however those of genus Carex may be called "true" sedges, and it is the most species-rich genus in the family. The study of Carex is known as...
. In Alaska
Alaska
Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...
it occurs on the fjord
Fjord
Geologically, a fjord is a long, narrow inlet with steep sides or cliffs, created in a valley carved by glacial activity.-Formation:A fjord is formed when a glacier cuts a U-shaped valley by abrasion of the surrounding bedrock. Glacial melting is accompanied by rebound of Earth's crust as the ice...
s of Prince William Sound
Prince William Sound
Prince William Sound is a sound off the Gulf of Alaska on the south coast of the U.S. state of Alaska. It is located on the east side of the Kenai Peninsula. Its largest port is Valdez, at the southern terminus of the Trans-Alaska Pipeline System...
alongside larkspur monkshood (Aconitum delphiniifolium), Eschscholtz's buttercup
Ranunculus eschscholtzii
Ranunculus eschscholtzii is a species of buttercup known by the common name Eschscholtz's buttercup. It is native to much of western North America from Arctic northwestern Canada and Alaska to California to New Mexico, where it grows in meadows and talus on high mountain slopes and other open rocky...
(Ranunculus eschscholtzii), and Canadian burnet
Sanguisorba canadensis
Sanguisorba canadensis, or Canadian burnet, is a perennial in the family Rosaceae native to North America, commonly growing in bogs, swamps, and roadsides from Labrador to Georgia. It grows 4–5 ft. tall, with creamy white flowers that grow in cylindrical spikes...
(Sanguisorba canadensis). It grows on Alaskan mountains such as the Kenai Mountains
Kenai Mountains
The Kenai Mountains are a mountain range in the U.S. state of Alaska. They extend 192 km northeast from the southern end of the Kenai Peninsula to the Chugach Mountains....
with grasses, sedges, and willows. In the alpine tundra
Alpine tundra
Alpine tundra is a natural region that does not contain trees because it is at high altitude. Alpine tundra is distinguished from arctic tundra, because alpine soils are generally better drained than arctic soils...
of the Rocky Mountains
Rocky Mountains
The Rocky Mountains are a major mountain range in western North America. The Rocky Mountains stretch more than from the northernmost part of British Columbia, in western Canada, to New Mexico, in the southwestern United States...
it grows in snowbeds and on turf
Sod
Sod or turf is grass and the part of the soil beneath it held together by the roots, or a piece of thin material.The term sod may be used to mean turf grown and cut specifically for the establishment of lawns...
made up of blackroot sedge (Carex elynoides) and alpine clover (Trifolium dasyphyllum). It occurs in the mountains of the Northwest Territories
Northwest Territories
The Northwest Territories is a federal territory of Canada.Located in northern Canada, the territory borders Canada's two other territories, Yukon to the west and Nunavut to the east, and three provinces: British Columbia to the southwest, and Alberta and Saskatchewan to the south...
among lichens and grasses such as arctic bluegrass (Poa arctica).
This species is food for a number of animals, such as mountain goat
Mountain goat
The Mountain Goat , also known as the Rocky Mountain Goat, is a large-hoofed mammal found only in North America. Despite its vernacular name, it is not a member of Capra, the genus of true goats...
s, which eat it during the summer in Alaska, as well as Sitka black-tailed deer
Sitka Deer
The Sitka deer or Sitka black-tailed deer , is a subspecies of mule deer , and similar to another subspecies the black-tailed deer . Their name originates from Sitka, Alaska. Weighing in on average between , Sitka deer are characteristically smaller than other types of black-tailed deer...
and hoary marmot
Hoary Marmot
The hoary marmot is a species of marmot that inhabits the mountains of northwest North America. Hoary marmots live near the tree line on slopes with grasses and forbs to eat and rocky areas for cover....
s.
This plant is a pioneer species
Pioneer species
Pioneer species are species which colonize previously uncolonized land, usually leading to ecological succession. They are the first organisms to start the chain of events leading to a livable biosphere or ecosystem...
in the primary phase
Primary succession
Primary succession is one of two types of biological and ecological succession of plant life, occurring in an environment in which new substrate devoid of vegetation and usually lacking soil, such as a lava flow or area left from retreated glacier, is deposited...
of ecological succession
Ecological succession
Ecological succession, is the phenomenon or process by which a community progressively transforms itself until a stable community is formed. It is a fundamental concept in ecology, and refers to more or less predictable and orderly changes in the composition or structure of an ecological community...
in disturbed areas, such as plains scoured by flooding. It has been known to colonize denuded soil in vehicle tracks. It was used to revegetate habitat disturbed during the construction of the Trail Ridge Road
Trail Ridge Road
Trail Ridge Road is the name for a stretch of U.S. Highway 34 and is the highest continuous highway in the United States. Also known as Trail Ridge Road/Beaver Meadow National Scenic Byway, it traverses Rocky Mountain National Park from Estes Park, Colorado in the east to Grand Lake, Colorado in...
in Colorado.