white oak
Quercus of FAGACEAE.
Distribution: It is widely distributed in the south of Huaihe River, the Yangtze River valley to the provinces of South China and Southwest China, and mostly grows in the hillside miscellaneous forests.
Deciduous trees, up to 20 meters high. Branchlets densely grayish brown tomentose. Leaves obovate, obovate-elliptic, 7- 15 cm long; The top is blunt and round, the base is wedge-shaped to narrow and round, the edge is wavy and blunt and round, the back is gray, densely covered with stellate hairs, the reticular veins are obvious, and the lateral veins are 8- 12 pairs; Petiole short, only 3-5 mm, covered with brownish yellow fluff. The shell bucket is bowl-shaped with a diameter of 0.8-1cm; Bracts lanceolate and closely arranged. Nuts are oblong, with a length of1.5-1.8cm and a diameter of 0.8- 1 cm, and the fruit umbilicus bulges. Seeds containing starch, starch plants, or used as feed.
Ornamental characteristics and garden uses: like light and warm climate, arid and barren, but it grows best in fertile and humid places. Strong germination. Sow each variety. Wood is hard; Branches can cultivate mushrooms; Seeds contain starch, bark and involucre contain tannin, and tannin extract can be extracted.
A young pine tree, or oak tree. The fruit is acorn, which is rich in starch and can be used to make wine or tofu, vermicelli and so on. Also used as medicine. Toxic to livestock.
Bitter in nature, slightly warm and nontoxic. This species is a poisonous plant included in China Botanical Atlas Database, and its toxicity is toxic to buds, branches, new branches, flowers and fruits. Cattle, sheep, horses, pigs, rabbits and other animals often cause poisoning after long-term intake, which mainly damages the digestive tract, causes urinary dysfunction and secondary local subcutaneous edema. The main symptoms of cow poisoning are coma, sudden chills, loss of appetite or abandonment, disappearance of ruminants, severe weakening or even cessation of rumen peristalsis, abdominal pain, constipation, frequent urination to anuria, leading to subcutaneous edema and body cavity effusion. The mortality rate is as high as 16%. Above.
The seed contains starch, and the shell and bark contain protoplasm and quercetin.