黑榆Ulmus davidiana Planch.
黑榆Ulmus davidiana Planch.
16. 黑榆（河北） 山毛榆（河南），热河榆、东北黑榆（东北木本植物图志）
Ulmus davidiana Planch. in Comp. Rend. Acad. Sci. Paris 74(1): 1498. 1872. nom. nud. et in DC. Prodr. 17: 158. 1873; Franch. in Journ. Linn. Soc. Bot. 26: 447. 1894; Schneid. Illustr. Handb. Laubholzk. 2: 904. f. 565 i. 566 i. 1912, et in Sarg. Pl. Wilson. 3: 261. 1916; Nakai Fl. Sylv. Kor. 19: 25. t. 8. 1932; 周汉藩, 河北习见树木图说 85 .图50. 1934; 陈嵘, 中国树木分类学 213. 图150. 1937; Rehd. Man. Trees and Schrubs ed. 2. 178. 1940; 树木学, 上册: 451. 图297: 8. 1961; 中国高等植物图鉴 1: 466. 图932. 1972; 傅立国, 东北林学院学报 1980 (3): 17. 1980; 河南植物志 1: 260. 图319. 1981; 河北植物志 1: 273. 图233. 1986; 辽宁植物志, 上册: 267. 图104(1-4). 1988. ——U. davidiana Planch. var. mandshurica Skv. in Manch. Monit. 52-58. 1929. ——U. davidiana Planch. var. pubescens Skv. l. c.
《Flora of China》 Vol. 5 (2003)
Ulmus davidiana Planchon
黑榆 hei yu
Trees or shrubs, to 15 m tall, d.b.h. to 30 cm, deciduous. Bark longitudinally fissured. Branchlets pubescent when young, glabrescent or ± pubescent, sometimes with irregularly longitudinally fissured corky layer. Winter buds ovoid; bud scales partly pubescent. Petiole 5-10(-17) mm, pubescent; leaf blade obovate to obovate-elliptic, 4-9(-10) × 1.5-4(-5.5) cm, abaxially densely pubescent when young but glabrescent with tufted hairs only in axil of veins, adaxially sparsely hirsute when young but glabrescent, base oblique, margin doubly serrate, apex caudate-acuminate to acuminate; secondary veins 12-22 on each side of midvein. Inflorescences fascicled cymes on second year branchlets. Perianth glabrous, 4-lobed. Samaras tan, obovate to ± obovate, 1-1.9 × 0.7-1.4 cm; stalk pubescent, ca. 2 mm; wings usually glabrous. Seed toward apex and in center of samara.
Slopes, wetlands near streams, valleys; below 2300 m. Anhui, Gansu, Hebei, Heilongjiang, Henan, Hubei, Jilin, Liaoning, Nei Mongol, Ningxia, E Qinghai, Shaanxi, Shandong, Shanxi, Zhejiang [Japan, Korea, Mongolia, Russia (Far East, E Siberia)].
别名：栓皮黑榆;东北黑榆;栓枝黑榆;山毛榆;春榆;Japanese elm;
科名：榆科 Ulmaceae
属名：榆属 Ulmus
16. 黑榆（河北） 山毛榆（河南），热河榆、东北黑榆（东北木本植物图志）
Ulmus davidiana Planch. in Comp. Rend. Acad. Sci. Paris 74(1): 1498. 1872. nom. nud. et in DC. Prodr. 17: 158. 1873; Franch. in Journ. Linn. Soc. Bot. 26: 447. 1894; Schneid. Illustr. Handb. Laubholzk. 2: 904. f. 565 i. 566 i. 1912, et in Sarg. Pl. Wilson. 3: 261. 1916; Nakai Fl. Sylv. Kor. 19: 25. t. 8. 1932; 周汉藩, 河北习见树木图说 85 .图50. 1934; 陈嵘, 中国树木分类学 213. 图150. 1937; Rehd. Man. Trees and Schrubs ed. 2. 178. 1940; 树木学, 上册: 451. 图297: 8. 1961; 中国高等植物图鉴 1: 466. 图932. 1972; 傅立国, 东北林学院学报 1980 (3): 17. 1980; 河南植物志 1: 260. 图319. 1981; 河北植物志 1: 273. 图233. 1986; 辽宁植物志, 上册: 267. 图104(1-4). 1988. ——U. davidiana Planch. var. mandshurica Skv. in Manch. Monit. 52-58. 1929. ——U. davidiana Planch. var. pubescens Skv. l. c.
《Flora of China》 Vol. 5 (2003)
Ulmus davidiana Planchon
黑榆 hei yu
Trees or shrubs, to 15 m tall, d.b.h. to 30 cm, deciduous. Bark longitudinally fissured. Branchlets pubescent when young, glabrescent or ± pubescent, sometimes with irregularly longitudinally fissured corky layer. Winter buds ovoid; bud scales partly pubescent. Petiole 5-10(-17) mm, pubescent; leaf blade obovate to obovate-elliptic, 4-9(-10) × 1.5-4(-5.5) cm, abaxially densely pubescent when young but glabrescent with tufted hairs only in axil of veins, adaxially sparsely hirsute when young but glabrescent, base oblique, margin doubly serrate, apex caudate-acuminate to acuminate; secondary veins 12-22 on each side of midvein. Inflorescences fascicled cymes on second year branchlets. Perianth glabrous, 4-lobed. Samaras tan, obovate to ± obovate, 1-1.9 × 0.7-1.4 cm; stalk pubescent, ca. 2 mm; wings usually glabrous. Seed toward apex and in center of samara.
Slopes, wetlands near streams, valleys; below 2300 m. Anhui, Gansu, Hebei, Heilongjiang, Henan, Hubei, Jilin, Liaoning, Nei Mongol, Ningxia, E Qinghai, Shaanxi, Shandong, Shanxi, Zhejiang [Japan, Korea, Mongolia, Russia (Far East, E Siberia)].