| Gamochaeta antarctica | |
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| Species: | G. antarctica |
| Binomial name | |
| Gamochaeta antarctica | |
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Gamochaeta antarctica, the Antarctic cudweed, is a species of flowering plant in the sunflower family. It is found only in Falkland Islands in the South Atlantic Ocean, where its natural habitat is temperate dwarf shrub heath. [1]
In physical geography, tundra is a type of biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra comes through Russian тундра from the Kildin Sámi word тӯндар meaning "uplands", "treeless mountain tract". Tundra vegetation is composed of dwarf shrubs, sedges and grasses, mosses, and lichens. Scattered trees grow in some tundra regions. The ecotone between the tundra and the forest is known as the tree line or timberline. The tundra soil is rich in nitrogen and phosphorus.
The Antarctic flora is a distinct community of vascular plants which evolved millions of years ago on the supercontinent of Gondwana. It is now found on several separate areas of the Southern Hemisphere, including southern South America, southernmost Africa, New Zealand, Australia and New Caledonia. Joseph Dalton Hooker was the first to notice similarities in the flora and speculated that Antarctica had served as either a source or a transitional point, and that land masses now separated might formerly have been adjacent.
The Antarctic realm is one of eight terrestrial biogeographic realms. The ecosystem includes Antarctica and several island groups in the southern Atlantic and Indian Oceans. The continent of Antarctica is so cold that it has supported only 2 vascular plants for millions of years, and its flora presently consists of around 250 lichens, 100 mosses, 25-30 liverworts, and around 700 terrestrial and aquatic algal species, which live on the areas of exposed rock and soil around the shore of the continent. Antarctica's two flowering plant species, the Antarctic hair grass and Antarctic pearlwort, are found on the northern and western parts of the Antarctic Peninsula. Antarctica is also home to a diversity of animal life, including penguins, seals, and whales.
The Gnaphalieae are a tribe of flowering plants in the family Asteraceae. It is most closely related to the tribes Anthemideae, Astereae, and Calenduleae.
Colonization of Antarctica refers to having humans, including families, living permanently on the continent of Antarctica. Currently, the continent hosts only a temporary transient population of scientists and support staff. Antarctica is the only continent on Earth without indigenous human inhabitants, despite its proximity to Argentina and Chile at the Antarctic Peninsula.
Cudweed is a common name for several species, and may refer to:
Gnaphalium norvegicum, the highland cudweed or Norwegian arctic cudweed, is a European species of plants in the sunflower family. It is widespread across much of Europe from the Mediterranean north to Finland and Iceland.
Gamochaeta is a genus of flowering plants in the aster family. There has not always been agreement among botanists regarding its status as a recognized genus, but it has become more accepted in recent years. It currently includes many plants that previously belonged in genus Gnaphalium. Like many species of Gnaphalium, many Gamochaeta are called cudweeds or everlastings.
Gamochaeta antillana, the Delicate everlasting, is a species of flowering plant in the sunflower family. It is native to the Greater Antilles and to the southeastern United States. It has also become naturalized in other places.
Gamochaeta stagnalis, the Desert cudweed, is a species of flowering plant in the sunflower family. It is native to Mexico, Guatemala, and the southwestern United States.
Gamochaeta calviceps, called narrowleaf purple everlasting, is a species of flowering plant in the sunflower family. It is native to South America and to the southeastern United States. It has also become naturalized in other places.
Gamochaeta stachydifolia is a species of flowering plant in the sunflower family. It is native to South America and naturalized in parts of California.
Gamochaeta coarctata, gray everlasting, is a species of flowering plant in the sunflower family. It is widespread in South America and naturalized in parts of Eurasia, Australia, and North America.
Gamochaeta sphacelata, called Owl's crown, is a species of flowering plant in the sunflower family. It is widespread across South America, Central America, and Mexico with the distribution just barely crossing the Río Grande into western Texas.
Gamochaeta argyrinea, called silvery cudweed or silvery everlasting, is a North American species of flowering plant in the sunflower family. It is widespread across the southeastern and south-central United States from Delaware south to Florida and west as far as southeastern Kansas and central Texas. It has also been found in Puerto Rico and in northern California.
Gamochaeta ustulata, commonly named featherweed or Pacific cudweed, is a North American species of flowering plant in the sunflower family. It is native to the western United States and southwestern Canada, in British Columbia, Washington, Oregon, and California. It is found primarily on seaside hills and in the Coast Ranges, with additional populations inland.
Gamochaeta pensylvanica, called Pennsylvania cudweed or Pennsylvania everlasting, is a widespread species of flowering plant in the sunflower family. It is native to South America and introduced into Eurasia, Africa, Australia, and North America. The pensylvanica epithet is a misnomer, as the plant is not native to Pennsylvania and only marginally naturalized there.
Gamochaeta simplicicaulis, the simple-stem cudweed or simple-stem everlasting, is a species of flowering plant in the sunflower family. It is native to South America and has become naturalized in Australia, New Zealand, and the southeastern United States.
Narrowleaf purple everlasting is a common name for two closely related plants which are often confused with each other:
Gamochaeta purpurea, the purple cudweed, purple everlasting, or spoonleaf purple everlasting, is a plant native to North America.
