山羊百科，林文智老師的植物、山岳、攝影紀錄

• 《中国植物志》 第20(2)卷 (1984) >> 064页 PDF >> 钻天杨 Populus nigra var. italica；http://www.iplant.cn/info/Populus%20nigra%20var.%20italica?t=z
• FOC Vol. 4 Page 160；62b. Populus nigra var. italica (Moench) Koehne, Deut. Dendrol. 81. 1893.；钻天杨；http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200005689
  • Illustration；http://www.efloras.org/object_page.aspx?object_id=1457&flora_id=2
• Populus nigra L. var. italica (Duroi) Koehne　 セイヨウハコヤナギ　標準；http://ylist.info/ylist_detail_display.php?pass=28121

Populus nigra L. 'Italica'；http://ylist.info/ylist_detail_display.php?pass=28384

• Checklist of Plants of India；Populus nigra L. var. i talica Münchh, Hausvater 5: 229. 1770；https://efloraindia.bsi.gov.in/eFlora/speciesDesc_PCL.action?species_id=41086

• Populus nigra var. italica Münchh. is an accepted name；http://www.plantlist.org/tpl1.1/record/kew-5004793

• Populus nigra var. italica Münchh.；Hausvater 5: 230 1770；https://www.biodiversitylibrary.org/page/47446301#page/262/mode/1up

Populus nigra

• 《中国植物志》 第20(2)卷 (1984) >> 063页 PDF >> 黑杨 Populus nigra；http://www.iplant.cn/info/Populus%20nigra?t=z
• FOC Vol. 4 Page 159；62. Populus nigra Linnaeus, Sp. Pl. 2: 1034. 1753.；黑杨；http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200005688
  • Illustration；http://www.efloras.org/object_page.aspx?object_id=1454&flora_id=2
  • Illustration；http://www.efloras.org/object_page.aspx?object_id=1455&flora_id=2
  • Illustration；http://www.efloras.org/object_page.aspx?object_id=1456&flora_id=2
• FOC Vol. 4 Page 159；62a. Populus nigra var. nigra；黑杨 (原变种)；http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=210001717

• Populus nigra L.　 ヨーロッパクロヤマナラシ　標準；http://ylist.info/ylist_detail_display.php?pass=6869

• Populus nigra L. is an accepted name；http://www.plantlist.org/tpl1.1/record/kew-5000337

• Populus nigra L., Sp. Pl. 2: 1034 (1753).；https://www.biodiversitylibrary.org/page/359055#page/476/mode/1up