| Collector | Holm-Nielsen, L. B. |
| Number | 21219 |
| Collected with | Jaramillo, J. & Brandbyge, J. |
| Country | Ecuador |
| Subpart | NAPO |
| County | |
| Locality | Río Cuyabeno north of Río Aguas Negras. Riverside forest. |
| Coordinates | 0° 11' S 75° 57' W |
| Minimum elevation (m) | 220 |
| Maximum elevation (m) | 220 |
| Start date | 1980/02/16 |
| End date | 1980/02/16 |
| Family | Rubiaceae |
| Identification | Rudgea justicioides Standl. |
| Determined by | Taylor, C. M. (MO), 2001. |
| Identification qualifier | |
| Field notes | Treelet 6 m tall. Bracts violet with green veins. |
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