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华北落叶松新变种,定名为垂枝华北落叶松(Larix Principis-rupprechtii Mayrvar.pendula D.S.Zhang et Y.M.Chen,var,nov.)乔木,高6.5～20m,胸径23～28cm,树皮暗灰褐色,不规则纵裂成小块片脱落;大枝平展,枝端上翘,树冠圆锥形。小枝柔软下垂,1年生枝条灰褐色,2～3年生枝暗灰褐色;短枝灰褐色,径2～5mm,叶窄条形,长0.8～3.5cm,宽约1mm,上部稍宽,先端尖或微钝,上面平,每侧有
A new variety of Larix principis-rupprechtii, named Larix Principis-rupprechtii Mayrvar.pendula DSZhang et YMChen, var, nov., Was 6.5 ~ 20m in height and 23 ~ 28cm in diameter. Irregular split into small pieces off; large branches flat, upturned branches, crown conical. Branchlets soft drooping, 1 year old branches grayish brown, 2 ~ 3 year old branches dark gray brown; spur grayish brown, diameter 2 ~ 5mm, leaf narrow strip, length 0.8 ~ 3.5cm, width 1mm, upper slightly wider, apex Or blunt, above flat, each side there