Who knows whether pineapple plants and air pineapples belong to the same family and genus?

They belong to different genera and families. Air pineapple, also known as air flower, air grass and wood-handled pineapple, is a perennial or epiphytic herb of Pterocarya. There are many varieties, some of which are 2 meters in diameter, and the ones are less than 10 cm. The plant is rosette-shaped, tubular, linear or radial, and its leaves are lanceolate, linear, erect, curved or curled at the top. In addition to green, leaves are gray and blue-gray, and some varieties of leaves will be beautiful red in sunny conditions. The leaves are covered with white scales, but there is no "water storage tank" in the center of the plant. Spikes or compound spikes are pulled out from the center of leaves. Spikes have dense and colorful bracts or green to silvery white bracts. Small peanuts in the bud, green, purple, red, white, yellow and blue five colors, 3 petals. The flowering period is mainly from August to April of the following year. When the capsule matures, it will automatically crack, and the seeds with crests will be scattered all over the place, floating in the wind and spreading everywhere. At present, there are about 44 genera 1400 species of bromeliads. Its famous ornamental tree species are coral pineapple, pineapple, water hyacinth, kiwi pear, fruit vine, sword pineapple, colorful pineapple, dictyophora and so on. Bromeliaceae is a terrestrial (epiphytic) plant, but it is well-founded that it can adapt to static hydroponics. When it comes to bromeliads, the first thing to note is that whether they grow on trees or on stony ground in deserts or shrubs, their roots are very short, and most of the nutrients and water needed by plants are obtained through the "water bottle" in the leaves and their centers. In particular, the water storage function of "water bottle" can confirm the existence of aquatic vascular bundles in plants. Plant classification systems all classify bromeliads as bromeliads. There is only one family (single family) of bromeliaceae. John hutchinson believed that the bromeliad family originated from Commelina communis and Alismata (aquatic) and further evolved into Zingiberales. Ginger is rich in aquatic plants (such as aquatic canna) and is at the highest level of evolution. The only way for its evolution must pass through the single family of land phoenix pear orders. From this, we can draw a dialectical conclusion, that is, the rationality of the essential aquatic genetic gene (truth) inherent in the bromeliad family preserves itself in the external terrestrial plants (appearances), and it is through this externality that it preserves itself. The cladistic analysis of DNA sequence of seed plants confirmed this conclusion. The representative plants of Bromeliaceae, such as Bromeliaceae, Dictyophora and Pineapple, are closely related to the aquatic plants of Commelinaceae, Palmaceae, Sparganiaceae, Typha and Araceae. Therefore, the interspecific relationship proves that the genetic genes in the plastids of aquatic plants are well preserved in bromeliads, and the vascular bundles in roots, stems and leaves can transport oxygen in the air to the roots. Therefore, in static hydroponics, the oxygen lacking in root life activities of bromeliads can be obtained from the aerial parts.