Pla 2pla 2
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American globeflower is an
endangered plant of eastern parts of North America. A press release datedSeptember 20, 2010, published on the IUCN website states that over one-fifth of
the world's plant species are threatened with extinction. Natural causes such as
forest fires, competition from non-native species, and pests are among the causes
of the threat. According to Professor Stephen Hopper, though, loss of habitat dueto human activities is the main threat to over 20 percent of the plant species on
Earth. Does this Spark an idea? Other People Are Reading
Endangered Plants of Assam Australian Endangered Plants List
Rafflesiao There are 16 known species of Rafflesia that grow in the rainforests of
Southeast Asia, and all of them are threatened or endangered. Rafflesia is
a parasitic plant that does not have leaves, stem, roots, or chlorophyll. It
grows on the root of a vine called Tetrastigma, from which it sucksnutrients with the help of thread-like structures that it sends into the body
of its host. The plant is visible only during its reproductive phase when theflowers--which grow almost a meter wide in diameter--sit directly on theforest floor. Over-collection of buds of this plant, which is used as
medicine, has contributed considerably to its endangered status. Also, the
fact that this plant can grow only in very specific regions of the world is a
big challenge for its conservation. 2. 2.
2.Wollemi Pine
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o Wollemi pine or Wollemia nobilis was recently discovered in 1994 in a
narrow canyon in the Wollemi National Park in Australia. The tree rises to
about 40 meters in height, with a trunk that can grow as big as a meter indiameter. It belongs to the family Araucariaceae, and today less than 100
of these plants are left on the planet. The Wollemi pine has upright
branches that grow from buds on the trunk. Leaves are borne on branchesthat grow sideways, from the upright branches. The younger leaves are
bright lime-green in color whereas the older ones are deep bluish in color.
Leaves are broad, unlike the pines of the northern hemisphere.
3.AmericanGlobeflowero American globeflower is a perennial that grows 12 to 20 inches in height
and bears pale yellow flowers that bloom between April and June. Theleaves are lobed and 3 to 5 inches wide. Once the plant bears flowers, the
leaves increase in size. This plant is found in 40 different populations
spread across eastern North America. None of the populations containsmore than 100 of these plants. Besides threat from human activities,
competition from invasive species, slugs eating up flowers, and changes in
watersheds by beavers are some other factors that threaten the survival ofthis plant.
4.Dwarf Bearclaw-Poppyo Dwarf bearclaw-poppy or Arctomecon humilis is endemic to Washington
County, Utah. It is a perennial herb that belongs to the poppy family. It
produces white flowers that bloom during mid April to May. The area in
which this plant thrives is undergoing rapid human population growth.Development to support this expansion and off-road vehicle use are
shrinking the plant's habitat further.