| Classification | Poaceae: Echinochloa | 
| Barcode(s) | 00415594 | 
| Collector | E. J. Palmer | 
| Collector number | 42715 | 
| Country | United States of America | 
| State | Massachusetts | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Suffolk County: Boston | 
| Locality | The Arnold Arboretum, near Aesculus group [Jamaica Plain]
 | 
| Date Collected | 1934-08-25 | 
| Habitat | Along bridle path | 
| Container | Spontaneous Flora of the Arnold Arboretum | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/549c84d2-8142-419c-97e5-131941789a17 | 
| Harvard University Herbaria Barcode | 00415594 | 
| Herbarium | A | 
| Family | Poaceae | 
| Determination |  Echinochloa muricata var. microstachya Wiegand | 
| Determined by | Kittredge, Walter Tobey | 
| Date Determined | 2013 | 
| Determination Remarks |  [current name] | 
| Family | Poaceae | 
| Determination |  Echinochloa pungens var. microstachya (Wiegand) Fernald & Griscom | 
| Determined by | Sørensen, Paul Davidsen | 
| Date Determined | 1969-07-** | 
| Family | Poaceae | 
| Determination |  Echinochloa muricata var. microstachya Wiegand | 
| Determination Remarks |  [label name] | 
| Phenology | Fruit | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |