He realized he had discovered a new genus, which he named Metasequoia, meaning "like a sequoia". Shigeru Miki from Kyoto University identified a divergent leaf form. While studying fossil samples of the family Cupressaceae, Dr. When the genus Metasequoia was first described in 1941, it was from Mesozoic Era fossils, none of which were less than 150 million years old. Metasequoia glyptostroboides (dawn redwood) bonsai treeĪlthough it was commonly known from the fossil record from across the northern hemisphere, the dawn redwood was considered extinct until the mid-twentieth century. If the species had been discovered later, it might have become extinct before being investigated. The tree faces considerable risks of extinction in its wild range due to deforestation however, it has been planted extensively in arboreta worldwide, where it has proved a popular and fast-growing ornamental plant. It is a particularly well-known example of a living fossil species. In 1941, the genus Metasequoia was reported by paleobotanist Shigeru Miki as a widely distributed extinct genus based on fossils, before attracting considerable attention a few years later when small populations were found alive in central China. Although the shortest of the redwoods, it can grow to 167 ft (51 m) in height. It now survives only in wet lower slopes and montane river and stream valleys in the border region of Hubei and Hunan provinces and Chongqing municipality in south-central China, notably in Lichuan county in Hubei. It is the sole living species of the genus Metasequoia, one of three genera in the subfamily Sequoioideae of the family Cupressaceae. campus: NE of Community Hall, toward 15th St.Metasequoia glyptostroboides, the dawn redwood, is a fast-growing, endangered deciduous conifer. It is also occasionally seen listed as 'Golden Mantle.' Regardless, since 'Ogon' is the original recorded cultivar name that is the only one considered valid." patent for this tree under the name, 'Golden Oji.' As it became aware that the plant was already circulating with a couple of different cultivar names, the patent was soon withdrawn. In 1995, New Oji Paper Company applied for a U.S. Around that same time, Larry Stanley & Sons nursery, Boring Oregon received it and starting distributing it under the name 'Gold Rush,' which to this day is the most commonly seen misspelling. In 1993, Pieter Zwijnenburg Jr., Boskoop, The Netherlands got the first propagation material directly from Japan and renamed it 'Goldrush' and began distributing it under that name in 1997.
With this definition, the name 'Ogon' is the valid cultivar name. Its original Japanese name was 'Ogon' which translates to "gold bullion" or "gold coin". This plant has a very long and confusing saga pertaining to its proper nomenclature. The original tree was planted in 1977 at the Kameyama breeding station, Institute for Forest Tree Improvement, New Oji Paper Co., Ltd, Mie, Japan.
"This cultivar originated in 1974 in Japan as a seedling selected from a batch of X-ray irradiated seed by the New Oji Paper Company. The following is from the Amerian Conifer Society. Easy to transplant, performs best in moist, well-drained, slightly acid soils Deciduous conifer, tree, grows somewhat slower than the species, bright yellow foliage in spring and retains much of the color throughout the summer in autumn needles turn an orange-brown before they fall.
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