| Classification | Poaceae: Echinochloa |
| Harvard University Herbaria Barcode(s) | 00228606 |
| Type Status | Holotype |
| Collector | J. L. Berlandier |
| Collector number | 890 |
| Country | Mexico |
| State | Tamaulipas |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Tamaulipas: Matamoros |
| Date Collected | 1831-05-** |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/5a37441b-091f-432d-a814-8ee6b059c901 |
| Harvard University Herbaria Barcode | 00228606 |
| Herbarium | GH |
| Family | Poaceae |
| Determination | Echinochloa crus-galli var. macra (Wiegand) Shinners |
| Determined by | Ali & F. W. Gould (TAES) |
| Date Determined | 1967 |
| Family | Poaceae |
| Determination | Echinochloa crus-pavonis var. macra (Wiegand) Gould |
| Determination Remarks | Southwest. Nat. 15: 391. 1971 [is Current name] |
| Family | Poaceae |
| Type Status | Holotype |
| Holotype of | Echinochloa zelayensis var. macera Wiegand |
| Taxon Reference | (for Echinochloa zelayensis var. macera Wiegand) Rhodora 1921. 23: 54. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
