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檫树(梓木、檫木、南树、黄楸树等),属樟科。系我国特产,是南方的优良速生用材树种,主要分布于长江流域各省。落叶大乔木,高可达35米,胸径达2米,树干通直。树干髓心大而圆,质软,易遭虫蛀,常常致使髓部中空,故有“十檫九空”之说。幼皮绿色或灰绿色,平滑不裂;老皮灰褐色,深纵裂,裂缝红褐色。树枝近对生或轮生,叶卵形,叶端1～3裂或全缘。檫树生长迅速,10～15年即可成材,直径可达30厘米。心边材区别明显,边材窄,浅褐色或浅黄褐色,略带红色;心材栗褐或暗褐色。木材光泽性强;芳香;微带辛辣滋味。年轮明显,宽而
檫 tree (Catalpa wood, Alder, South tree, Catalpa tree, etc.), is a Lauraceae. Department of China’s specialty, is an excellent species of fast-growing timber in the south, mainly in the provinces of the Yangtze River Basin. Deciduous tree, up to 35 meters high, breast diameter of 2 meters, the trunk straight. Large and round trunk pith, soft, vulnerable to moth-eaten, often resulting in hollow pith, it is “ten 檫 nine empty ” said. Young green or gray-green, smooth and not cracked; old skin gray-brown, deep longitudinal split, crack red-brown. Branches nearly opposite or whorled, leaf ovate, leaf terminal 1 ~ 3 crack or entire. Castanopsis trees grow rapidly, 10 to 15 years to become useful, up to 30 cm in diameter. Heartwood sapwood obvious difference, sapwood narrow, light brown or light brown, slightly red; heartwood chestnut brown or dark brown. Wood gloss; aromatic; microstrip spicy taste. The annual rings are clear and broad