Pineapple (bō luó ) Scientific name: Ananas comosus English name: Pineapple Pineapple: At present, the pineapple has been widely distributed between the Tropic of Cancer and the North Tropic of Cancer, and has become one of the world's important fruit trees. the middle of the 16th century by the Portuguese missionaries brought to Macao, and then introduced to all parts of Guangdong, and then planted in Guangxi, Fujian and Taiwan provinces, after a long period of selection and breeding, and in turn After a long period of selection and breeding, many varieties have been produced.　　Pineapple belongs to the pineapple family, pineapple perennial herbaceous fruit plants, rapid nutrient growth, short production cycle, the average annual temperature of 23 ℃ above the region can grow all year round.　　Pineapple fruit top has crown bud, sex like warmth. The skin of Taiwan pineapple is not as rough as the pineapple produced in mainland China, and some of them are slightly inverted cone-shaped, and the flesh is much more delicate than ordinary pineapple, basically no astringent flavor and sufficient moisture. Pineapple fruit shape is beautiful, juicy and sweet, with a special flavor, is a favorite fruit. The edible part is the flower stalk of Ponta, pineapple belongs to angiosperms. Metasequoia Latin name: Metasequoia glyptostroboides Hu et Cheng binomial Metasequoia glyptostroboides Hu & W.C. Cheng, 1948 (scientific name: Metasequoia glyptostroboides), deciduous tree Metasequoia glyptostroboides is the only existing species of the genus Metasequoia in the family of Cypresses, and is a rare and precious relict tree species in China, the first batch of rare species listed as China's national first-class protected plants, and is known as the "living fossil" of the plant kingdom. The fossils found show that Metasequoia was widely distributed in the northern hemisphere in the Mesozoic Cretaceous and Cenozoic Era, but after the Quaternary Ice Age, other species belonging to the genus Metasequoia have all become extinct. But after the Quaternary Ice Age, all the other species belonging to the genus Metasequoia had been extinct. The border area of Sichuan, Hubei and Hunan in China, because of its complex topography and small influence of glaciers, made Metasequoia survived and became a rare treasure in the world. Deciduous tree, up to 35-41.5 meters high, with a diameter at breast height of 1.6-2.4 meters; bark gray-brown or dark gray, cracked into strips of sheet-like shedding; branchlets opposite or nearly opposite, pendulous. Leaves decussate, arranged in pinnate biseriate rows on green deciduous lateral branchlets, linear, soft, almost sessile, usually 1.3-1/2 cm long, 1.5-2 mm wide, with the midvein concave above and 4-8 stomatal lines along both sides of the midvein below. Monoecious, male cones solitary in leaf or bract axils, ovoid, decussate in raceme- or panicle-like rows, stamens decussate, ca. 20, anthers 3, filaments short, connectives conspicuous; female cones solitary at apices of lateral branches, composed of 22-28 decussate bract scales and bead scales, each with 5-9 ovules. Seed cones pendulous, ripening that year, fruit blue, edible, subglobose or oblong-globose, slightly quadrangular, 1.8-2.5 cm; seed scales very thin, transparent; bract scales woody, peltate, transversely rhombic abaxially, with a transverse groove, dark brown when ripe; seeds obovate, flattened, narrowly winged all around, with concave notch at apex. The flowers bloom in February each year, and the fruit ripens in November. It is a gymnosperm. Narcissus belongs to the genus Narcissus of the family Staphylinidae, native to China, has been cultivated in China for more than a thousand years, as one of China's traditional flowers. Narcissus scientific name: Narcissus tazeta vai chimensis; English name: Chinese Narsissus; Alias: Ling Bo Xian Zi, Yu Ling Ling Zi, Jin Yin Tai, Narcissus, Yao Nian Hua, female historical flowers, Tian Onion, Ya Garlic, Tian Garlic, Lilan, female star, snow in the flower, etc. P.S Chinese name: Narcissus Foreign name: Daffodi Alias: Lingbo Fairy, Marigold Yintai, Drop God Fragrant Princess, Jade Linglong, Jin Yintai, Yao female flowers ...... binomial: Narcissus boundary: Botanical kingdom phylum: Angiosperm phylum class: Monocotyledon phylum order: Liliaceae family: Lycoris family genus: Narcissus genus: Narcissus species: Narcissus