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The morphology of D. retusus. The leaves of D. retusus are broadly ovate in shape, and the petioles are devoid of hair, unlike the same genus species of Dipterocarpus gracilis Blume, which exhibits oblong leaves and stellate hairy petioles. Pictures were taken by the author Zhong-Shuai Sun on 2022-06-01 in Linhai campus of Taizhou University that located in Zhejiang province of China.
