| Classification | Rubiaceae: Hedyotis |
| Classification 1 | Rubiaceae: Houstonia |
| Harvard University Herbaria Barcode(s) | 00254278 |
| Type Status | Syntype |
| Collector | Josiah Gregg |
| Collector number | 72 |
| Country | Mexico |
| State | Coahuila |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Coahuila |
| Locality | [Battlefield of Buena Vista] |
| Date Collected | 1848-05-19 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/06c42495-9b3d-4b9b-9c64-0ba5c970727c |
| Harvard University Herbaria Barcode | 00254278 |
| Herbarium | GH |
| Family | Rubiaceae |
| Type Status | Syntype |
| Syntype of | Hedyotis acerosa A. Gray |
| Verified by | W. T.Kittredge |
| Date Determined | 2007 |
| Taxon Reference | (for Hedyotis acerosa A. Gray) Smithsonian Contr. Knowl. 1852. 3: 81. |
| Family | Rubiaceae |
| Determination | Houstonia acerosa (A. Gray) Bentham & Hooker f. |
| Determined by | E. E. Terrell |
| Date Determined | 1978 |
| Determination Remarks | [current name] |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
