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子午岭林区现阶段的木本植物共有269种,分属于53个科、110个属。通过对植物分布调查比较、可将木本植物划为五个大的分布区类型:世界分布的有5个属(世界单种属:刺楸、杜仲、侧柏、刺榆、文冠果属);热带分布的有23个属、温带分布的有77个属;古地中海和泛地中海分布的有2个属;中国特有的3个属(文冠果、虎榛子、木姜子属)。从属的分布区类型来看,木本区系明显是温带性质,并且有较丰富的热带成份,其中温带成份占这里木本总属数(不包括世界种)的73.33%,热带成份占21.9%。
At present, there are 269 species of woody plants in this zone, belonging to 53 families and 110 genera. According to the survey of plant distribution, woody plants can be divided into five types of distribution area: There are 5 genera distributed in the world (single genus in the world: Catalpa bungei, Eucommia ulmoides, Platycladus orientalis, ). There are 23 genera in tropical distribution and 77 genera in temperate distribution. There are 2 genera distributed in the ancient Mediterranean Sea and the pan-Mediterranean Sea; and 3 genera (Xanthoceras sorbifolia, tiger hazelnut, and zingiberaceae) distributed in China. The subordinate distribution types show that the woody fauna is obviously temperate and has abundant tropical components, of which the temperate component accounted for 73.33% of the total genus woody species (excluding the world species), the tropical component accounted for 21.9% .