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Archive for August 8, 2012

Jack-in-the-Pulpit Corms

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Jack-in-the-Pulpits have underground, vertical swollen stems referred to as corms, which store nutrients that allow them to withstand extremes in temperature, as well as droughts. They also provide the plant with the energy it needs to produce leaves and flowers. A large corm is likely to produce a female plant (which needs more energy to produce seeds), a smaller corm a male. If the plant lacks enough nutrients to produce a flower, its corm will be very small. All parts of Jack-in-the-Pulpit, including the corm, contain a high concentration of calcium oxalate crystals, which are known to cause a burning sensation if eaten. Native Americans roasted or dried Jack-in-the-Pulpit corms (Indian Turnip or Iroquois Breadroot, as they called it) before grinding them into flour for bread, using them to treat colds or as a contraceptive. There is still a demand for their corms today, but it is not from humans – black bears find them irresistible!  NOTE: An alert reader suggested that I emphasize the fact that of Jack-in-the-Pulpit is NOT to be eaten by humans.  The crystals in it bear many sharp needles that cut and poison the flesh, and if bits of the plant get to the back of your mouth, it can cause it to swell to the point of suffocation!