Palmae and foxtail coconut trees. Originated in Cape York in the northeast of Queensland, Australia, it has been introduced and cultivated in China. Evergreen trees, with tall and straight plants, solitary stems, smooth stems with leaf scars, slightly like wine bottles, with a height of 12- 15 meters, bright green leaves clustered at the top of the stems, pinnately divided, 2-3 meters long, lanceolate leaflets, and whorled on the leaf axis, named after the fox tail.
Betel nut is cultivated in India, Sri Lanka, Thailand, Malaysia and the Philippines. The trunk is unbranched, with a height of12 ~15m. Areca catechu is the seed of Areca catechu. Areca catechu leaves are the leaves of betel leaves of Piperaceae. Betel nut is slightly smaller than an egg, with fibrous skin and seeds, that is, betel nut. The endosperm is hard with gray-brown spots.
Silk sunflower (scientific name: Washingtonia filifera) is commonly known as old sunflower, also known as California Pukui and Washington Palm. Native to California, Arizona and Mexico. With beautiful crown, leaves as big as a fan, rapid growth and evergreen seasons, it is an important greening tree species in tropical and subtropical regions. Suitable for planting in courtyards or in front of large buildings and on both sides of roads. It is an excellent greening tree species.
Bottle coconut trunk is smooth and bottle-shaped, expanding below the middle, gradually narrowing near the top and growing into a neck. The leaves are clustered at the top of the stem, the pinnate leaves rotate in an arch shape, and the base is twisted horizontally, so that the leaf surface of the pinnate leaves forms a 45-degree angle with the plane where the leaf axis is located, and sometimes the edges of the pinnate leaves and petioles are slightly red.
Cycad is commonly known as Cycad, alias: Bihuojiao, Fengwei Jiao Jiao, Fengweisong, Pteris, Latin scientific name (Cycad. ) Cycadaceae, Cycadaceae, named for its high wood density, sinking in water and being as heavy as iron; On the other hand, it is named because it needs a lot of iron for its growth. The most famous Cycas is flowering, which is called "Cycas flowering". Cycas is a beautiful ornamental tree species, which is widely cultivated. Its stem contains starch and can be eaten. The seeds are oily, rich in starch, slightly toxic, edible and medicinal, and have the effects of treating dysentery, relieving cough and stopping bleeding.