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An Examination on Indumentum and Fruit of Dimocarpus longan and D. confines
Authors:Fu De-zhi  Song Shu-yin
Abstract:Examination on hairs and fruits of the Dimocarpus longan Lour. (Guiyuan) and D. confinis (How et Ho) H. S. Lo (magic fruit) was carried out. The fruit of D. longan was found to be of smoothly colliculate or granulate protuberances and typical tuft hairs on the surface, and the leaf was also of tuft hairs on the lower surface. However, the fruit of D. confinis was of dense and hard aculeate protuberances and simple and glandular hairs on the surface, and the leaf was also of the same kind of hairs on the lower surface. These characteristics of D. longan can been easily detected in samples of commercial fruits, which were misidentified as the fruits of D. confinis. Moreover, the fruit surface of Guiyuan Sampled from the markets had no any artificially destroryed trace, which indicated that they were not forged through the processing of the fruits of D. confinis, and thus they were trueGuiyuan, the fruit of D. longan.
Keywords:Dimocarpus longan (Guiyuan)  D  confinis (magic fruit)  fruit  Indumentum  
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