Quercus variabilis
Quercus variabilis
Safety & Hazards
All parts of the plant contain tannins. Whilst tannins are found in many foods, and have a range of medicinal uses. They are usually only present in low concentrations. In some foods made from oaks (particularly the seeds), the tannin content can be quite high unless the food is treated to reduce tannin content. Tannins are only of low toxicity and, because of their bitter taste and astringency, are unlikely to be eaten in large quantities. However, if they are taken in excess, they can cause stomach pains; constipation followed by bloody diarrhoea: excessive thirst; and excessive urination[ 293 Title Poisonous Plants of North Carolina Publication Author Website http://www.ces.ncsu.edu/depts/hort/consumer/poison/poison.htm Publisher Year 0 ISBN Description An excellent concise but comprehensive guide to toxic plants that grow in N. Carolina. It lists even those plants that are of very low toxicity, including several well-known food plants such as carrots and potatoes. ].
Botanical Description
Quercus variabilis is a deciduous tree that can grow up to 30 metres tall[ 266 Title Flora of China Publication Author Website http://flora.huh.harvard.edu/china/ Publisher Missouri Botanical Garden Press; St. Louis. Year 1994 ISBN Description An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available. ]. The straight, cylindrical bole can be up to 100cm in diameter; the bark is thick and corky[ 109 Title Plantae Wilsonae. Vol 1 - 3 Publication Author Wilson. E. H. Website http://www.biodiversitylibrary.org Publisher University Press; Cambridge. Year 1911 - 1917 ISBN Description Details of the palnts collected by the plant collector E. H. Wilson on his travels in China. Gives some habitats. Not for the casual reader. It can be downloaded from the internet. , 865 Title Chinese Economic Trees Publication Author Woon Young Chun Website http://www.biodiversitylibrary.org Publisher Commercial Press; Shanghai. Year 1921 ISBN Description Brief details of many of the Chinese trees with economic importance. It can be downloaded from the Internet. ]. The tree is a source of cork and is managed on a commercial basis in China to optimize cork production. It is also harvested from the wild for local use as a food, medicine and source of materials.