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小黑杨——♂起源:小黑杨原是中国林科院以小叶杨为母本,欧洲黑杨为父本的人工有性杂种。于一九六○年引进我省,在白城地区进行试验,经过十多年来的观察比较,从中选出一个雄性单株,形成小黑杨——♂优良无性系。形态特征:乔木,树干圆满通直,幼龄树皮光滑灰绿色(一般在四、五年生时枝痕下仍保留三条棱线),壮龄灰白色。树冠圆锥形,侧枝与主干夹角45度。短枝叶小,菱状宽卵形,表面深绿色,有光泽,叶背灰绿色,叶先端尾尖或渐尖,基部圆形或广楔形,最宽处在中部。叶柄近左右扁平,无毛或有少量疏毛,约为叶长之半。叶缘无毛,钝锯齿,有半违明狭边,叶三分之一以下锯齿疏浅呈微波壮或全缘。长枝叶大,菱壮阔卵形或三角状卵圆形。
Black Poplar - ♂ Origin: Black Poplar was originally a Chinese Academy of Forestry with Populus as the female parent, European poplar as the male parent hybrids. In 1960 introduced to our province in Baicheng area for testing, after more than 10 years of observation and comparison, from which a male single plant, forming black Poplar - ♂ excellent clones. Morphological characteristics: trees, trunks perfectly straight, juvenile bark smooth gray-green (usually in the four or five years when the branch marks remain under the three ridgelines), the age of off-white. Crown conical, collateral and backbone angle of 45 degrees. Short branches small, rhombic broadly ovate, dark green surface, shiny, gray-green leaves, apex caudate tip or acuminate, base rounded or wide wedge-shaped, the widest in the middle. Petiole nearly flattened, glabrous or a small amount of sparse hair, about half the length of leaves. Leaf margins glabrous, obscured serrated, there are semi-definitive narrow edge, less than one-third of the leaves sawtooth sparse was microwave Zhuang or whole. Long branches and leaves, Ling Zhuang broad oval or triangular oval.