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| Family | Annonaceae |
| Basionym | Unonopsis hammelii G. E. Schatz & Maas |
| Original Identification | Unonopsis sp. cf. U. costaricensis Fries |
| Current Taxon | Unonopsis hammelii G. E. Schatz |
| Protologue Citation | Blumea 52(3): 487-489, f. 20, t. 5a-b, map 12. 2007. |
| Holotype/Isotype | Isotype |
| DUKE Accession Number | 287368 |
| Comments | |
| Primary Collector | Barry Hammel |
| Collector Number | 11608 |
| Collection Date | 7 Apr 1982 |
| Country | Costa Rica |
| Province/State | Heredia |
| Plant Location Notes | Finca La Selva, the OTS Field Station on the Rio Puerto Viejo just E of its junction with the Rio Sarapiqui. Elevation about 100 m. On south boundary trail 800 m., just west of Q. el Salto at top of rise. |
| Plant Description Notes | Tree 20 m. tall, 35 cm dbh; flowers cream-orange. Flowers preserved in EtOH. |
| DUKE Barcode | |
| Broad geographical location | Central America |
