Subtropical fruit trees and evergreen trees. Solid wood, dark reddish brown, elegant texture, corrosion resistance, has always been a first-class material. Bark gray-black; Branchlets are cylindrical, chestnut, and densely white lenticels. Petiole length 10~25 cm or more; 2 ~ 3 pairs of leaflets, less than 4 pairs, thin leathery or leathery, lanceolate or ovate-lanceolate, sometimes oblong-lanceolate, 6 ~ 15cm long, 2 ~ 4cm wide, tapering in a sharp or short tail shape, with the whole margin, dark green and shiny ventral surface, green powder on the back and hairless on both sides; Lateral veins are often slender, the ventral side is not obvious, and the dorsal side is obvious or slightly convex; The petiole is 7~8 mm long. Inflorescence terminal, wide and multi-branched; Pedicel slender, 2~4 mm long, sometimes thick and sometimes short; Calyx covered with golden short villi; Stamens 6~7, sometimes 8, filaments about 4 mm long; The ovary is densely covered with small tumors and bristles. The fruit is ovoid to nearly spherical, 2~3.5 cm long, and usually dark red to bright red when ripe; The seeds are all wrapped in fleshy arils. Spring blossoms and summer bears fruit. According to research, the longest-lived tree in the world was planted by Yuan in Tangpo Village, Xinxu Town, ling shan. Tree height15m, chest circumference 512cm, and average crown width13m. It is said that this tree is 1500 years old. 196 1 year, Guangdong Fruit Research Institute conducted a general survey of litchi variety resources, and confirmed that there was a large fragrant litchi tree in Dengjia Village, Xinwei Township, Lingshan, which was over 1200 years old. 1In June, 963, Pu Dianlong, a famous botanist and professor of Sun Yat-sen University, made a special trip to Tangpo Village, Dengjiatang, Lingshan to inspect this ancient plum tree, and also determined that this old tree was over 1460 years old. On 1999, Lingshan municipal government listed this ancient plum as a key cultural relic protection unit in Lingshan.