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Bougainvillea, Behbahan.Many of the small white flowers, in various stages of development, may be seen among the larger bracts. Bougainvillea (/ ˌ b uː ɡ ən ˈ v ɪ l i. ə / BOO-gən-VIL-ee-ə, US also / ˌ b oʊ-/ BOH-) is a genus of thorny ornamental vines, bushes, and trees belonging to the four o' clock family, Nyctaginaceae.
As the hyacinths multiply into mats, they eliminate the presence of fish, and choke waterways for boating and shipping. [54] This effect was well underway in the state of Louisiana by the turn of the 20th century. [39] The plant invaded Florida in 1890, [55] and an estimated 50 kg/m 2 of the plant mass choked Florida's waterways. [56]
About 3,800 additional non-native species of vascular plants are recorded as established outside of cultivation in the U.S., as well as a much smaller number of non-native non-vascular plants and plant relatives. The United States possesses one of the most diverse temperate floras in the world, comparable only to that of China.
Some trees play a tune, using vines for harp strings and a chorus of robins. A fight breaks out between a waspish-looking hollow tree and a younger, healthier tree for the attention of a female tree. The young tree emerges victorious, but the hollow tree retaliates by starting a fire. The plants and animals try to extinguish or evade the blaze.
Plant breeding is the science of changing the traits of plants in order to produce desired characteristics. [1] It has been used to improve the quality of nutrition in products for humans and animals. [2] The goals of plant breeding are to produce crop varieties that boast unique and superior traits for a variety of applications.
Arctic vegetation is largely controlled by the mean temperature in July, the warmest month. Arctic vegetation occurs in the tundra climate, where trees cannot grow.Tundra climate has two boundaries: the snow line, where permanent year-round snow and ice are on the ground, and the tree line, where the climate becomes warm enough for trees to grow. [7]
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