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The "Kobano-miyama-nobotan" (Tashiroea okinawensis) belongs to Melastmataceae (the Melastome family). It is an evergreen shrub that is an endemic species found on Okinawa Island in Japan's Okinawa Islands. It grows in the northern Yambaru region, along the edges of bright forests, on slopes, and along rivers, reaching a height of 50 to 100 cm. The leaves are oblong, thin, and leathery; their margins range from serrated to slightly entire; they are glabrous on both surfaces and arranged alternately. Three prominent veins run along the upper surface of the leaf. From around June to July, it produces corymbs at the tips of its branches, bearing 3 to 7 flowers. The flowers have four pinkish-red petals, though white flowers are occasionally found. The fruit is a pear-shaped capsule. It is also known by the alternative name "Tashiro-no-ki". It is designated as Vulnerable (VU) on the Ministry of the Environment’s Red List.
Although it was once classified in the genus Bredia, research conducted at institutions such as the Tsukuba Botanical Garden determined in 2019 that it should be classified as a separate genus, Tashiroea.
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