| Family | Apocynaceae |
| Subfamily | Apocynoideae |
| Tribe | Wrightieae |
| Scientific name | Strophanthus divaricatus (Loureiro) Hooker & Arnott |
| Synonyms | Pergularia divaricata Loureiro; Emericia divaricata (Loureiro) Roemer & Schultes; Nerium chinense Hunter ex Roxburgh; Periploca divaricata (Loureiro) Sprengel; Strophanthus chinensis (Hunter ex Roxburgh) G. Don; Strophanthus dichotomus de Candolle var. chinensis Ker Gawler; Strophanthus divergens Graham; Vallaris divaricata (Loureiro) G. Don |
| Common name | (English common name) goat-horns |
| (Japanese common name) none | |
| Distribution | China, Vietnam, Laos |
| Reference | Strophanthus divaricatus (Lour.) Hook. & Arn. |
| Strophanthus divaricatus (Loureiro) Hooker & Arnott |
| March 2007 at Tsukuba Botanical Garden |
March 2007 at Tsukuba Botanical Garden |
March 2007 at Tsukuba Botanical Garden |