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赤楠(Syzygium buxifolium)为桃金娘科蒲桃属常绿阔叶灌木或小乔木,嫩枝有棱,树冠椭圆形、球形,木质坚韧,树皮茶褐色或红褐色、不光滑,枝条繁密,多分枝。单叶,对生,叶小,革质,宽椭圆形、椭圆形、宽倒卵形或近倒披针形,春季新芽和新叶为红色,具观赏性,夏季叶绿色、黄绿色,基部宽楔形或圆形,先端圆钝,有时短尖,全缘,羽状脉,主脉凹陷,侧脉细小、不明显、多而密,斜行向上,离叶缘1~1.5mm处结合成边脉,叶柄短。
Syzygium buxifolium is a Myrtaceae genus of evergreen broad-leaved shrubs or small trees, branches and edges, crown oval, spherical, woody, bark brown or reddish brown, not smooth, dense branches, Multi-branched. Leaves simple, opposite, leaflet small, leathery, broadly elliptic, elliptic, broadly obovate or nearly oblanceolate, spring sprout and new leaf red, ornamental, summer leaf green, yellowish green, base broadly cuneate Or rounded, apex obtuse, sometimes short, entire, pinnate, main veins concave, lateral veins small, inconspicuous, multiple and dense, obliquely upward, 1 ~ 1.5mm from the leaf margin combined into a side veins Petiole short.