赤松(song)(Pinus densiflora Sieb.et Zucc.)是松(song)科松(song)屬植物(wu),喬木,高達30米(mi)(mi),胸徑(jing)達1.5米(mi)(mi);樹皮桔紅(hong)(hong)色(se),樹干上部(bu)樹皮紅(hong)(hong)褐色(se);枝平展形成(cheng)傘(san)狀樹冠(guan);一(yi)年(nian)生枝淡(dan)黃色(se)或紅(hong)(hong)黃色(se)。雄球(qiu)花(hua)淡(dan)紅(hong)(hong)黃色(se),圓筒形;雌球(qiu)花(hua)淡(dan)紅(hong)(hong)紫色(se)。球(qiu)果成(cheng)熟(shu)時暗黃褐色(se)或淡(dan)褐黃色(se),種(zhong)鱗張(zhang)開,不(bu)久即脫落(luo),卵(luan)(luan)圓形或卵(luan)(luan)狀圓錐形;種(zhong)鱗薄,鱗盾扁菱(ling)形,通常扁平;種(zhong)子倒卵(luan)(luan)狀橢圓形或卵(luan)(luan)圓形,長(chang)(chang)4-7毫(hao)米(mi)(mi);連(lian)翅長(chang)(chang)1.5-2厘米(mi)(mi),種(zhong)翅寬5-7毫(hao)米(mi)(mi);子葉(xie)5-8枚(mei),長(chang)(chang)2.5-4厘米(mi)(mi),邊緣有細鋸齒(chi)。花(hua)期4月,球(qiu)果次年(nian)9月下旬至10月成(cheng)熟(shu)