External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:2307-1
- Publication
- Notizblatt des Botanischen Gartens und Museums zu Berlin-Dahlem. Berlin-Dahlem
- Collation
- 15: 421
- Family as entered in IPNI
- Apocynaceae