| Classification | Fabaceae: Macrolobium | 
| Classification 1 | Caesalpiniaceae: Outea | 
| Harvard University Herbaria Barcode(s) | 00065232 | 
| Type Status | Isosyntype,  Isolectotype | 
| Collector | R. Spruce | 
| Collector number | 2659 | 
| Country | Brazil | 
| Geography | South America: South America (Region) (Region): Brazil | 
| Locality | Prope Panuré ad Rio Uaupes | 
| Date Collected | 1852-10-** - 1853-01-** | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/9981c17a-14eb-482a-9b32-4e21d2a72655 | 
| Harvard University Herbaria Barcode | 00065232 | 
| Herbarium | GH | 
| Family | Fabaceae | 
| Type Status | Isosyntype | 
| Isosyntype of | Macrolobium gracile Spruce ex Bentham | 
| Determination Remarks | [filed under] | 
| Taxon Reference | (for  Macrolobium gracile Spruce ex Bentham) Fl. Bras. [Martius] 1870. 15(2): 223. | 
| Family | Fabaceae | 
| Type Status | Isolectotype | 
| Isolectotype of | Macrolobium gracile Spruce ex Bentham | 
| Verified by | Cowan, Richard Sumner | 
| Date Determined | 1952 | 
| Taxon Reference | (for  Macrolobium gracile Spruce ex Bentham) Fl. Bras. [Martius] 1870. 15(2): 223. | 
| Family | Fabaceae | 
| Determination | Macrolobium gracile Spruce ex Bentham | 
| Determined by | Cowan, Richard Sumner | 
| Date Determined | 1952 | 
| Determination Remarks | [current name] | 
| Family | Fabaceae | 
| Determination | Macrolobium gracile Spruce ex Bentham | 
| Determined by | J. F. M. [J. F. Macbride] | 
| Date Determined | 1919 | 
| Family | Caesalpiniaceae | 
| Determination | Outea gracilis Spruce ex Bentham | 
| Determination Remarks | [label name] | 
| Sex | not determined | 
| Phenology | Flower | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |