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Alstonia scholaris, commonly called blackboard tree, scholar tree, milkwood or devil's tree in English, [3] is an evergreen tropical tree in the dogbane family (Apocynaceae). It is native to southern China, tropical Asia (mainly the Indian subcontinent and Southeast Asia ) and Australasia , where it is a common ornamental plant .
This is a bushy shrub or tree with a spiny trunk and branches. In shrub form, it grows up to 25 feet (7.6 m), and as a tree, it reaches a maximum height around 50 feet (15 m). The drooping branches bear oval leaves. The seeds are dispersed by birds. [3] This tree has thorns similar to that of a lime or lemon tree.
[1] [2] It is widely cultivated and naturalised in other tropical and subtropical regions, including Australia. Common names in English include siris, Indian siris, East Indian walnut, Broome raintree, lebbeck, lebbek tree, frywood, koko and woman's tongue tree. [3] The latter name is a play on the sound the seeds make as they rattle inside the ...
[6] [12] The tree is considered valuable in arid regions because it produces fruit even in dry times. [11] The fruit can be fermented for alcoholic beverages. [9] The seed cake remaining after the oil is extracted is commonly used as animal fodder in Africa. [9] The seeds of the Balanites aegyptiaca have molluscicide effect on Biomphalaria ...
Salt marsh during low tide, mean low tide, high tide and very high tide (spring tide). A coastal salt marsh in Perry, Florida, USA.. A salt marsh, saltmarsh or salting, also known as a coastal salt marsh or a tidal marsh, is a coastal ecosystem in the upper coastal intertidal zone between land and open saltwater or brackish water that is regularly flooded by the tides.
It is a tree growing to 30 m tall, with a trunk diameter of 1 m. The fruit is ovoid, 3 cm long, with five wings not extending beyond the fruit apex. [4] The bark is fire-resistant. The wood is coarse, fairly straight grained, dull to somewhat lustrous and without any smell or taste. The hardwood varies from light brown with few markings to dark ...
It grows 1–1.5 m (3 ft 3 in – 4 ft 11 in) tall and has smooth, hollow stems that bear leaves up to 20–60 cm (7.9 in – 1 ft 11.6 in) long and 1.5 cm (1 ⁄ 2 in) wide at their base, which are sharply tapered and bend down at their tips.
Faidherbia is a thorny tree growing up to 6–30 m (20–98 ft) tall and up to 2 m (6 + 1 ⁄ 2 ft) in trunk diameter. Its deep-penetrating tap root makes it highly resistant to drought. The bark is grey, and fissured when old. There are 11,000 seeds/kg. [citation needed]