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Hura crepitans, the sandbox tree, [2] also known as possumwood, monkey no-climb, assacu (from Tupi asaku) and jabillo, [3] is an evergreen tree in the family Euphorbiaceae, native to tropical regions of North and South America including the Amazon rainforest. It is also present in parts of Tanzania, where it is considered an invasive species. [4]
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.
Tree sap is a supercooled liquid in cold temperatures. [12] John Hunter observed, in his Treatise on the Blood, that tree sap within a tree freezes some 17 degrees Fahrenheit below its nominal freezing point. [13] [14]
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".
Similarly, the fruit of the sandbox tree burst open to disperse seeds, but the reaction is so violent that it can injure nearby people or livestock. [31] Some plants such as the dogwood bunchberry and white mulberry will also fling pollen from their flowers. Peat mosses are known to explosively launch their spores. [32]
It also may not affect the entire tree; sometimes leaves persist only on scattered branches. [4] Marcescence is most obvious in deciduous trees that retain leaves through the winter. Several trees normally have marcescent leaves such as oak ( Quercus ), [ 5 ] beech ( Fagus ) and hornbeam ( Carpinus ), or marcescent stipules as in some but not ...
Tovex is a 50/50 aqueous solution of ammonium nitrate and methylammonium nitrate (sometimes also called monomethylamine nitrate, or PR-M), sensitized fuels, and other ingredients including sodium nitrate prills, finely divided (paint-grade) aluminum, finely divided coal, proprietary materials to make some grades cap sensitive, and thickening agents to enhance water resistance and to act as ...
Ceiba speciosa, the floss silk tree (formerly Chorisia speciosa), is a species of deciduous tree that is native to the tropical and subtropical forests of South America.It has several local common names, such as palo borracho (in Spanish literally "drunken stick"), or árbol del puente, samu'ũ (in Guarani), or paineira (in Brazilian Portuguese).