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Eucommia is a genus of small trees now native to China, with a fossil record that shows a much wider distribution. The single living species, Eucommia ulmoides, is vulnerable in the wild, but is widely cultivated in China for its bark, and is highly valued in herbology such as traditional Chinese medicine.
Eucommia ulmoides is native to forest areas on hills and mountains of the provinces in central and eastern China, though it has been suggested that the species is extinct in the wild. E. ulmoides is also occasionally planted in botanical gardens and other gardens in Europe, North America, and elsewhere, being of interest as the only cold-tolerant (to at least -30 °C) rubber-producing tree. Fossil species of Eucommia have been found in 10- to 35-million-year-old brown coal deposits in central Europe, in numerous fossil sites in Asia, and five different fossil species have been described from North America, indicating the genus had a much wider range in the past.
Eucommia tea has been shown to somewhat lower blood pressure. It has been used and sold for a various other things. Research appears to be somewhat limited.
Text excerpted from the Wikipedia article Eucommia by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
