The drooping Cycas ( lat. Cýcas revolúta ) is an evergreen tree of the genus Cycas , the most famous species of this genus .
|International scientific name|
Cycas revoluta Thunb. (1783)
IUCN 3.1 Least Concern : 42080
Its homeland is subtropical Japan : Kyushu and Ryukyu Islands (according to some reports, it is also found in Fujian province in China ).
Names in other languages: English. Japanese Sago Palm, King Sago Palm, Sago Cycas, Sago Cycad, Sago Palm , Vantue ( Vietnamese. Vạn tuế ) dates. Japansk Koglepalme, Sagopalme , Spanish Palma sagú, Sagutero , ital. Palma a sagù , whale com . 蘇鐵 , exercise р , pinyin : sūtiě , pall. : southe , cor. 소철 , sochol, malayal. അലങ്കാരപ്പന him. Japanischer Palmfarn, Sagopalme , Netherlands. Cycas revoluta , Polish Sagowiec odwinięty , port. Palmeira cica , fin. Saagopalmu , fr. Cycas du Japon, Cycas sagoutier , Czech Cykas japonský , sotetsu ( Jap. П 鉄 ) .
Evergreen dioecious tree .
The trunk is powerful, columnar, with the remains of dead leaves. It grows up to 2-3 m, very old specimens can reach a height of 6-7 m.
The leaves are dark green, unpaired, 50-150 cm long, located on a dense top of the trunk with a dense rosette , with 100-240 narrow, rigid leaf blades. Adult plants can branch, and also form numerous babies at the base of the trunk, which leads to the formation of a characteristic dense cluster of several plants with many leaf rosettes.
Sporophylls are collected in same-sex strobiles . Pollination - using the wind.
Seeds are rounded, slightly oblong, 2-2.5 cm in diameter.
Able to live for more than a hundred years.
This type of cypress is the only one that can tolerate small frosts , so it is known far beyond its natural range . On the territory of Russia and neighboring countries, it can be found as a park plant (on the Black Sea coast of the Caucasus , in Crimea ).
The Cycling Cypress can be grown as a houseplant . In this case, it usually grows in height no more than 60 cm. Like all cycads, it prefers well-drained soil. It tolerates transplantation.
In Vietnam, it was actively used in the local variety of bonsai - honnonbo - made for the celebration of the birthday of the rich and noble Vietnamese  .
Like some other cycas, the sago (starchy core of the trunks) of the cypress is used by the peoples of tropical countries for food. Fresh, it can be dangerous, as it contains toxins, but special treatment leads to their destruction.
Cygnus is drooping poisonous to humans and animals when eaten. It should be noted that the taste of the plant is attractive to pets. Clinical symptoms of poisoning occur within 12 hours and may include vomiting, nausea, weakness, and cramping.
All parts of the plant are poisonous, especially seeds.
Cycas revoluta - Toulouse Museum
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