| Joosia macrocalyx | |
|---|---|
| | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Rubiaceae |
| Genus: | Joosia |
| Species: | J. macrocalyx |
| Binomial name | |
| Joosia macrocalyx Standl. ex Steyerm. | |
Joosia macrocalyx is a species of plant in the family Rubiaceae. It is endemic to Ecuador.