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The pine-tree of the West is one of the first that meets the eye as you enter Southern Illinois. From a distance, the tree actually makes a sharp S curve with its boughs, so that it seems to hug the ground.is a seed or dry fruit or infructescence that has hooks or teeth. The main function of the bur is to spread the seeds of the bur plant, often through epizoochory. The hooks of the bur is used to catch on to for example fur or fabric, so that the bur, which contain seeds, then can be transported along with the thing it attached itself to.The bur must be able to easily detach from the plant and easily attach to for example the fur of an animal. The ability to spread the seeds depends both on the number of burs that manage to get attached and on force of attachment. The hook span of the bur has been shown to have a large influence on the contact separation force. Some studies have also shown force can increase with the size of the birr, although not all large burs have a high contact separation force. Furthermore, the flexibility of the bur might also influence this force which can increase with stiffness.
damage to clothing, punctures to tires, and clogging equipment such as agricultural harvesting machinery. Furthermore, because of their ability to compete with crops over moisture and nutrition, bur plants can be lableled as weeds and therefore also be subject to removal. Methods of controlling the spread of bur plants include the use of herbicides, slashing and cultivation among others.buffalo bur, (Solanum rostratum), also called horned nightshade or Colorado bur, plant of the nightshade family (Solanaceae), native to high plains east of the Rocky Mountains from North Dakota to Mexico. Buffalo bur, named for its prickly berries that were commonly entangled in the fur of American bison (Bison bison), is an aggressive weed in many parts of the United States and is an invasive species in several countries, including Russia and Australia.
Buffalo bur plants, often growing along roadsides and other disturbed areas, can reach nearly 60 cm (2 feet) tall and are covered in golden prickles. The leaves are deeply lobed, arranged alternately on the stems, and toxic to humans and livestock. The plants bear small yellow flowers in the summer and produce minute seeds that are an important food for doves and quail. Before the introduction of the potato (Solanum tuberosum) to North America, buffalo bur was the original host plant of the destructive.one of the most amazing stories about hitchhiking plants is the origin of the fastener known as Velcroï¿½. We are not sure whether this remarkable invention came from the cocklebur (Xanthium), burdock (Arctium), bur clover (Medicago hispida), teasel (Dipsacus sativus) or another species of "bur," but this amazing discovery is certainly pertinent to any discussion about hitchhiking plants. (Source:www2.palomar.edu)