北美短叶松Pinus banksiana
中文名（Chinese Name）：北美短叶松
学名（Scientific Name）：Pinus banksiana Lamb.
英文名（English Common Name）：
别名（Chinese Common Name）：短叶松
异名（Synonym）：Pinus rupestris F. Michx. Pinus hudsonica Poir. Pinus sylvestris var. divaricata Aiton Pinus divaricata f. procumbens (J.Rousseau) B.Boivin Pinus banksiana f. procumbens J.Rousseau
科属（Family & Genus）：松科Pinaceae松属Pinus
形态特征（Description）：乔木，在原产地高达25米，胸径60-80厘米，有时成灌木状；树皮暗褐色，裂成不规则的鳞状薄片脱落；枝近平展，树冠塔形；每年生长二至三轮枝条，小枝淡紫褐色或棕褐色；冬芽褐色，矩圆状卵圆形，被树脂。针叶2针一束，粗短，通常扭曲，长2-4厘米，径约2毫米，先端钝尖、两面有气孔线，边缘全缘；横切面扁半圆形，皮下层细胞二层，连续排列，树脂道通常2个，中生；叶鞘褐色，宿存2-3年后脱落或与叶同时脱落。球果直立或向下弯垂，近无梗, 窄圆锥状椭圆形，不对称，通常向内侧弯曲，长3-5厘米，径2-3厘米，成熟时淡绿黄色或淡褐黄色，宿存树上多年；种鳞薄，张开迟缓，鳞盾平或微隆起，常成多角状斜方形，横脊明显，鳞脐平或微凹，无刺；种子长3-4毫米，翅较长，长约为种子的三倍。
分布（Distribution）：原产北美东北部。我国辽宁熊岳、抚顺，北京，山东青岛、蒙山东塔山，江苏南京,江西庐山及河南鸡公山等地均已引种栽种栽植作观赏树。生长缓慢。
用途（Use）：
引自中国植物志英文版：FOC Vol. 4 Page 21
Pinus banksiana Lambert, Descr. Pinus. 1: 7, plate 3. 1803.
北美短叶松 bei mei duan ye song | Pinaceae | Pinus
Trees to 25 m tall; trunk straight or crooked, to 0.6 m d.b.h. in native range; bark orange- or red-brown, scaly; crown irregularly rounded or flat topped; branchlets orange-red or red-brown, aging gray-brown, slender, rough; winter buds red-brown, ovoid, resinous. Needles 2 per bundle, yellow-green, twisted, 2-5 cm × 1-1.5(-2) mm, stomatal lines present on all surfaces, fine, base with semipersistent sheath 3-6 mm, margin finely serrulate. Seed cones upcurved, nearly sessile or shortly pedunculate, tan to pale brown or greenish yellow, ovoid when open, asymmetric, 3-5.5 cm, maturing in 2 years, then soon shedding seeds or often long serotinous and shedding seeds only with age or after fire. Apophyses mostly depressed but increasingly mamillate toward outer part, basal of cone; umbo depressed, sunken centrally, small, unarmed or with a small, reflexed apicula. Seeds brown or nearly black, compressed obovoid, oblique, 4-5 mm; wing 1-1.2 cm.
Cultivated. Beijing Shi, Heilongjiang (Harbin Shi), Henan (Jigong Shan), Jiangsu (Nanjing Shi), Jiangxi (Lu Shan), Liaoning, Shandong [native to N North America]
（责任编辑：徐晔春）
学名（Scientific Name）：Pinus banksiana Lamb.
英文名（English Common Name）：
别名（Chinese Common Name）：短叶松
异名（Synonym）：Pinus rupestris F. Michx. Pinus hudsonica Poir. Pinus sylvestris var. divaricata Aiton Pinus divaricata f. procumbens (J.Rousseau) B.Boivin Pinus banksiana f. procumbens J.Rousseau
科属（Family & Genus）：松科Pinaceae松属Pinus
形态特征（Description）：乔木，在原产地高达25米，胸径60-80厘米，有时成灌木状；树皮暗褐色，裂成不规则的鳞状薄片脱落；枝近平展，树冠塔形；每年生长二至三轮枝条，小枝淡紫褐色或棕褐色；冬芽褐色，矩圆状卵圆形，被树脂。针叶2针一束，粗短，通常扭曲，长2-4厘米，径约2毫米，先端钝尖、两面有气孔线，边缘全缘；横切面扁半圆形，皮下层细胞二层，连续排列，树脂道通常2个，中生；叶鞘褐色，宿存2-3年后脱落或与叶同时脱落。球果直立或向下弯垂，近无梗, 窄圆锥状椭圆形，不对称，通常向内侧弯曲，长3-5厘米，径2-3厘米，成熟时淡绿黄色或淡褐黄色，宿存树上多年；种鳞薄，张开迟缓，鳞盾平或微隆起，常成多角状斜方形，横脊明显，鳞脐平或微凹，无刺；种子长3-4毫米，翅较长，长约为种子的三倍。
分布（Distribution）：原产北美东北部。我国辽宁熊岳、抚顺，北京，山东青岛、蒙山东塔山，江苏南京,江西庐山及河南鸡公山等地均已引种栽种栽植作观赏树。生长缓慢。
用途（Use）：
引自中国植物志英文版：FOC Vol. 4 Page 21
Pinus banksiana Lambert, Descr. Pinus. 1: 7, plate 3. 1803.
北美短叶松 bei mei duan ye song | Pinaceae | Pinus
Trees to 25 m tall; trunk straight or crooked, to 0.6 m d.b.h. in native range; bark orange- or red-brown, scaly; crown irregularly rounded or flat topped; branchlets orange-red or red-brown, aging gray-brown, slender, rough; winter buds red-brown, ovoid, resinous. Needles 2 per bundle, yellow-green, twisted, 2-5 cm × 1-1.5(-2) mm, stomatal lines present on all surfaces, fine, base with semipersistent sheath 3-6 mm, margin finely serrulate. Seed cones upcurved, nearly sessile or shortly pedunculate, tan to pale brown or greenish yellow, ovoid when open, asymmetric, 3-5.5 cm, maturing in 2 years, then soon shedding seeds or often long serotinous and shedding seeds only with age or after fire. Apophyses mostly depressed but increasingly mamillate toward outer part, basal of cone; umbo depressed, sunken centrally, small, unarmed or with a small, reflexed apicula. Seeds brown or nearly black, compressed obovoid, oblique, 4-5 mm; wing 1-1.2 cm.
Cultivated. Beijing Shi, Heilongjiang (Harbin Shi), Henan (Jigong Shan), Jiangsu (Nanjing Shi), Jiangxi (Lu Shan), Liaoning, Shandong [native to N North America]
（责任编辑：徐晔春）
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