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The capsules explode when ripe, splitting into segments and launching seeds at 70 m/s (250 km/h; 160 mph). [5] One source states that ripe capsules catapult their seeds as far as 100 m (330 ft). [ 9 ] [ verification needed ] Another source states that seeds are thrown as far as 45 m (150 ft) from a tree, most commonly 30 m (100 ft). [ 10 ]
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The tree-like saguaro cactus is native only to the Sonoran Desert and can live for 200 years! Its super-slow growth rate (about an inch per year for the first eight years of its life) keeps it ...
The tree produces spiky green fruits about the size of a golf ball, which turn brown and drop off the tree over an extended period beginning in fall and continuing over the winter.
[11] [12] [13] In botanical terminology, cacti are succulents, [5] but not the reverse, as many succulent plants are not cacti. Cacti form a monophyletic group and apart from one species are native only to the New World , the Americas , but through parallel evolution similar looking plants in completely different families like the Apocynaceae ...
Cnidoscolus texanus, commonly known as Texas bullnettle [2] (also Texas bull nettle [3] and Texas bull-nettle [4]), tread-softly, mala mujer, and finger rot, is a perennial herb covered with stinging hairs. The main stem, branches, leaves, and seed pods are all covered with hispid or glass-like bristly hairs that release an allergenic toxin ...
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 with a light touch. The plant blooms from late spring to early fall.
The cactus has 8 to 13 straight or twisted ribs, each divided into crookedly truncated cusps up to 1.5 centimeters high. It also has 9 to 18 marginal spines that are protruding or slightly curved and up to 3 centimeters long, as well as 1 to 4 central spines that are all up to 3 centimeters long.