for National Geographic News
Two Belgian botanists have completed a piece of detective work to rival that of super-sleuth Hercule Poirot, their fictional fellow countryman.
Marcel De Cleene, associate professor at Ghent University in Belgium, and fellow ethnobotanist, Marie Claire Lejeune, combed thousands of sources, including old travelers' tales, fairytales, Greek classical writings, and medieval herbals, to produce the Compendium of Symbolic and Ritual Plants in Europe.
The result of a 20-year investigation, the English-language edition has now been published. It represents the first complete survey of the part played by European plants in agriculture, folklore, magic, religion, and herbal medicine.
Experts in how different peoples and cultures use indigenous plants, the field known as ethnobotany, believe the work could prove a catalyst for medical breakthroughs, putting scientists on the trail of new, life-saving drugs.
Michael Heinrich, head of the Centre for Pharmacognosy and Phytotherapy in London, England, said that while European ethnobotanists have focused on the rain forests of South America, Africa, and Asia in their search for new medicinal plants, those on their own doorstep have been largely ignored.
"The most exciting aspect of the compendium is the region it covers. It's amazing how little we know about the use of such resources within Europe," he said
Much else has been forgotten about Europe's ritual plantseven those we still use today. The Christmas tree, for example, harks back to a northern Germanic fertility festival and feast of the dead (Yuletide) when greenery was hung up in the home to warn off evil spirits.
Halloween and those ghoulish, carved pumpkins have their roots in an ancient Celtic festival. While the burning of incense, widespread in Roman Catholic churches today, was frowned upon by early Christians because heathen Greeks and Romans used incense (from frankincense trees) to communicate with their own gods.
Compendium author De Cleene said: "Western man is probably baffled by this use of plants in religion, as he is no longer aware of the crucial part nature played in pre-Christian religions."
He provides the following grisly example of just how seriously ancient Europeans took their plant-life. Germanic tribes punished those caught stripping bark from a sacred tree by cutting out their navel and nailing it to the damaged trunk. The accused were then made to walk around in ever-decreasing circles until their intestines wrapped the trunk.
De Cleene added: "The ancient magical reputation of plants still lingers on in present-day popular beliefs and medicine, in traditions, and even in common expressions"like touch wood. "However, we hardly ever give this a moment's thought today, as we are no longer aware of its origin."
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