Top 10 Fascinating Carnivorous Plants
Out of all the strange plants in the world, who would have thought that you even get flesh eating plants? Well, maybe not so much “flesh” eating, as insect eating, but carnivorous none the less. All carnivorous plants can be found in areas where the soil has very little nutrients. These fascinating plants are categorized as carnivorous as they trap insects and arthropods, produce digestive juices, dissolve the prey and derive some, or most, of their nutrients from this process. The first book on these plants was written by Charles Darwin, in 1875, “Insectivorous Plants”. After further discoveries and research, it is believed that these carnivorous properties evolved on six separate occasions, from five different orders of flowering plants. These are now presented in over 630 different species of flowering plant.
There are five basic trapping mechanisms found in all these plants: Pitfall traps, Fly Paper traps, Snap traps, Bladder traps and Lobster pot traps. I would like to show you a couple of plants, using each mechanism, so that you can also see the differences between different genera.
Sarracenia, or the North American Pitcher plant, is a Genus of carnivorous plants indigenous to the eastern seaboard, Texas, the great lakes and south eastern Canada, with most species being found only in the southeast states. It is also the first plant with a pitfall trap that we will look at.
The plant’s leaves have evolved into a funnel, with a hood like structure growing over the opening to prevent rain water from diluting the digestive juices. Insects are attracted by colour, smell and a nectar-like secretion on the lip of the pitcher. Slippery footings, aided in at least one species, by a narcotic drug lacing the nectar, causes insects to fall inside where they die and are digested by proteases and other enzymes.