| Rhyssostelma | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Apocynaceae |
| Subfamily: | Asclepiadoideae |
| Tribe: | Asclepiadeae |
| Genus: | Rhyssostelma Decne. |
| Species: | R. nigricans |
| Binomial name | |
| Rhyssostelma nigricans | |
Rhyssostelma is a species of plants in the family Apocynaceae first described as a genus in 1844. It contains only one known species, Rhyssostelma nigricans, endemic to Argentina.