Sinonimía
Tylodontia fuscula (C. Wright) Mangelsdorff, Meve & Liede
- ≡Metastelma fusculum C. Wright
- ≡Astephanus fusculus (C. Wright) Schltr.
- ≡Cynanchum fusculum (C. Wright) Alain
- – "Amphistelma filiforme" auct., err. sec. Greuter & Rankin Rodríguez 2016
- – "Cynanchum sauvallei" auct., err. sec. Greuter & Rankin Rodríguez 2016
- – "Metastelma filiforme" auct., err. sec. Greuter & Rankin Rodríguez 2016