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The sandbox tree can grow to 60 metres (200 ft) in height, [7] and up to 13 metres (44 ft) in girth at 1.8 metres (6 ft) above the ground; [8] its large ovate leaves grow to 60 cm (2 ft) wide. The trees are monoecious, with red, un-petaled flowers. Male flowers grow on long spikes, while female flowers grow alone in leaf axils.
A notable example is the sandbox tree (Hura crepitans), which can fling seeds 100 meters (300 ft) and has been called the "boomer plant" due to the loud sound it generates. Another example is Impatiens, whose explosive dehiscence is triggered by being touched, leading it to be called the "touch-me-not".
Slower movement, such as the folding of Mimosa pudica leaves, may depend on reversible, but drastic or uneven changes in water pressure in the plant tissues [5] This process is controlled by the fluctuation of ions in and out of the cell, and the osmotic response of water to the ion flux.
I scanned the trees and saw that a maple tree had "exploded". The explosion caused a big crack in the tree about three feet high. When a winter wind stirs the frozen trees, they sometimes appear to burst vertically. When it was 40 degrees below zero at night, I lay awake and listened to the trees explode. That's a true wilderness thermometer!
The leaves are ovate to elliptic, simple, and have shallow, rounded teeth on the margins. [8] The seed pods have five valves which coil back rapidly to eject the seeds in a process called explosive dehiscence [9] or ballistochory. This reaction is where the name 'touch-me-not' comes from; in mature seed pods, dehiscence can easily be triggered ...
The enemy, meanwhile, fought to kill, mostly with the wars’ most feared and deadly weapon, the improvised explosive device. American troops trying to help Iraqis and Afghans were being killed and maimed, usually with nowhere to return fire. When the enemy did appear, it it was hard to sort out combatant from civilian, or child.
The leaves are microphylls, each containing only a single vein and measuring less than 1 cm (0.4 inches) long. Two types of microphylls are formed, green trophophylls that cover most of the aerial shoots, and yellow to tan sporophylls that form the strobili, and contain the sporangia .
Connections. The most played puzzle took place on April 1, while the most difficult puzzle was June 20. The most shared puzzle happened on Jan. 11, and "bolt," "nail," "nut," "screw" was the most ...