赤松(song)(Pinus densiflora Sieb.et Zucc.)是松(song)科松(song)屬植(zhi)物(wu),喬木,高(gao)達(da)30米,胸徑達(da)1.5米;樹(shu)(shu)(shu)皮(pi)桔紅色(se),樹(shu)(shu)(shu)干(gan)上部樹(shu)(shu)(shu)皮(pi)紅褐色(se);枝(zhi)平(ping)展形(xing)成傘狀(zhuang)樹(shu)(shu)(shu)冠;一(yi)年生枝(zhi)淡黃(huang)色(se)或紅黃(huang)色(se)。雄球(qiu)花淡紅黃(huang)色(se),圓筒形(xing);雌球(qiu)花淡紅紫色(se)。球(qiu)果成熟(shu)時(shi)暗黃(huang)褐色(se)或淡褐黃(huang)色(se),種(zhong)鱗(lin)(lin)張開,不久(jiu)即脫(tuo)落,卵圓形(xing)或卵狀(zhuang)圓錐形(xing);種(zhong)鱗(lin)(lin)薄,鱗(lin)(lin)盾扁菱形(xing),通常扁平(ping);種(zhong)子倒卵狀(zhuang)橢圓形(xing)或卵圓形(xing),長4-7毫(hao)米;連翅(chi)長1.5-2厘米,種(zhong)翅(chi)寬5-7毫(hao)米;子葉5-8枚,長2.5-4厘米,邊緣有細鋸齒。花期4月(yue),球(qiu)果次年9月(yue)下(xia)旬至(zhi)10月(yue)成熟(shu)