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Esenbeckia runyonii
''Esenbeckia runyonii'' is a species of flowering tree in the citrus family, Rutaceae, that is native to northeastern Mexico,〔 with a small, disjunct population in the Lower Rio Grande Valley of Texas in the United States. Common names include Limoncillo and Runyon's Esenbeckia. The specific epithet honors Robert Runyon, a botanist and photographer from Brownsville, Texas, who collected the type specimen from a stand of four trees〔 discovered by Harvey Stiles on the banks of Resaca del Rancho Viejo, Texas, in 1929. Conrad Vernon Morton of the Smithsonian Institution received the plant material and formally described the species in 1930. Some consider it a synonym of ''E. berlandieri'' Baill. ex Hemsl..〔
==Description==
Runyon's Esenbeckia is a small, multi-trunked tree that slowly grows to around in height and in diameter. The dark green, glossy leaves are trifoliate, with each leaflet long. Bark is whitish except for irregular copper-colored patches that exfoliate to reveal the greenish, lenticel-dotted inner bark, much like American sycamores. The star-shaped white flowers〔 are about in width and have four or five sepals, with an equal number of petals and stamens. The flowers form in broad, terminal panicles and are produced biannually, once in late spring and once in September. The fruit is a thick-skinned,〔 woody capsule roughly in length that has five carpels. When mature, carpels dehisce (break apart) to eject black, up to long seeds.〔 Green capsules are distinctively orange scented,〔 while leaves smell like lemons.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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