| Classification | Apocynaceae: Himatanthus | 
| Barcode(s) | 02116104 | 
| Collector | D. G. Campbell, J. C. Ongley, & J. F. Ramos | 
| Collector number | P20832 | 
| Country | Brazil | 
| State | Amazonas | 
| Geography | South America: South America (Region) (Region): Brazil: Amazonas | 
| Locality | Plants of Brazilian Amazonia; State of Amazonas; Manaus-Pôrto-Velho Highway; Rio Tupana, Km. 160. Igapó Tupana | 
| Date Collected | 1974-03-22 | 
| Habitat | black water. | 
| Project | Plants on Edge/Endless Forms TCN | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/b2cd52a6-bc12-45d3-a16f-8a191c9c1b1b | 
| Harvard University Herbaria Barcode | 02116104 | 
| Herbarium | GH | 
| Family | Apocynaceae | 
| Determination |  Himatanthus attenuata (Bentham) Woodson | 
| Determined by | Markgraf, Friedrich | 
| Date Determined | 1981 | 
| Determination Remarks |  [filed under] [current name] | 
| Sex | not determined | 
| Phenology | NotDetermined | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |