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Cryptomeria (literally "hidden parts") is a monotypic genus of conifer in the cypress family Cupressaceae. It includes only one species, Cryptomeria japonica (syn. Cupressus japonica L.f.). It is considered to be endemic to Japan, where it is known as Sugi . [2] The tree is called Japanese cedar [3] or Japanese redwood [4] [5] in English.
Daisugi (台杉) is a Japanese technique related to pollarding, used on Cryptomeria (sugi) trees. [1] [2] [3] The term roughly translates to "platform cedar". [4] When applied in a silviculture context, the daisugi method requires trunks to be pruned every 2–4 years in order to maintain the straight, clear grain that they are coveted for. [5] [6]
Yakusugi is the largest Sugi (Cryptomeria japonica) in Yakushima in southwest Japan. Yakusugi (屋久杉) refers to "Japanese cedar" (sugi, or Cryptomeria) on the island of Yakushima, typically growing at altitudes 500 meters and higher. The term also extends to the lumber taken from the logging of these coniferous trees.
The pollen of many genera of Cupressaceae is allergenic, causing major hay fever problems in areas where they are abundant, [42] most notably by Cryptomeria japonica (sugi) pollen in Japan. [43] Highly allergenic species of cypress with an OPALS allergy scale rating of 8 out of 10 or higher include: Taxodium , Cupressus , Callitris ...
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Jōmon Sugi (縄文杉) is a large Cryptomeria tree located on Yakushima, a UNESCO World Heritage Site, in Japan. It is the oldest and largest among the old-growth cryptomeria trees on the island, and is estimated to be between 2,170 [ 2 ] and 7,200 years old.
Index Seminum meaning in Latin "seed index", is a catalog of seeds of wild or cultivated plants offered free of charge or in exchange of seeds of equivalent value by botanical gardens or arboretums. It is published annually or biennially by these institutions, traditionally in A5 format (148 × 210 mm).