| Collector | Lojtnant, B. |
| Number | 13279 |
| Collected with | Molau, U. |
| Country | Ecuador |
| Subpart | PASTAZA |
| County | |
| Locality | Montalvo, along Río Bobonaza 0-1 km N of the military camp. Partly disturbed rain forest along the river. |
| Coordinates | 2° 5' S 76° 58' W |
| Minimum elevation (m) | 250 |
| Maximum elevation (m) | 250 |
| Start date | 1979/05/16 |
| End date | 1979/05/16 |
| Family | Asclepiadaceae |
| Identification | Matelea nielsenii Morillo |
| Determined by | G. Morillo (VEN), 1992. |
| Identification qualifier | |
| Field notes | Shrub, ca 0.5 m high. Flowers green. |
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