討論:Strophanthus gratus

• 《中国植物志》 第63卷 (1977) >> 156页 PDF >> 旋花羊角拗 Strophanthus gratus；http://www.iplant.cn/info/Strophanthus%20gratus?t=z
• FOC Vol. 16 Page 178；1. Strophanthus gratus (Wallich & Hooker) Baillon, Hist. Pl. 10: 171. 1889.旋花羊角拗；http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200018468

• Strophanthus gratus (Wall. & Hook.) Baill. is an accepted name；http://www.plantlist.org/tpl1.1/record/kew-198229

• Strophanthus gratus Baill., Hist. Pl. (Baillon) 10: 171 (1889).；https://www.biodiversitylibrary.org/page/28547422#page/174/mode/1up
• Roupellia grata Wall. & Hook.； Bot. Mag. 75: t. 4466 1849.；https://www.biodiversitylibrary.org/item/14353#page/154/mode/1up

• Strophanthus gratus (Wall. & Hook.) Baill.；Holland, Kew Bull. Misc. Inform. add. 9 3: 447 1915；https://www.biodiversitylibrary.org/page/33685098#page/107/mode/1up
• Strophanthus gratus (Wall. & Hook.) Baill.；Fl. Trop. Afr. [Oliver et al.] 4, 1: 170 1904；https://www.biodiversitylibrary.org/item/126#page/177/mode/1up
• Strophanthus gratus (Wall. & Hook.) Baill.；Franch. J. de Botanique 7: 321 1893；https://www.biodiversitylibrary.org/page/3093317#page/331/mode/1up
• Strophanthus gratus (Wall. & Hook.) Baill.；Gilg, Monographieen afrikanischer Pflanzen-Familien und -Gattungen 7: 17 f. 1 1903；https://www.biodiversitylibrary.org/page/36883956#page/26/mode/1up
• Strophanthus gratus (Wall. & Hook.) Baill.；Franch., Nouv. Arch. Mus. Hist. Nat. sér. 3,, 5: 256 1893.；https://www.biodiversitylibrary.org/item/113508#page/272/mode/1up