| Classification | Asteraceae: Aster |
| Classification 1 | Asteraceae: Symphyotrichum |
| Harvard University Herbaria Barcode(s) | 00003722 |
| Type Status | Holotype |
| Collector | W. Boott |
| Country | United States of America |
| State | Massachusetts |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Suffolk County: Revere |
| Locality | Chelsea Beach Island, right hand of railroad [Oak Island] |
| Date Collected | 1850-10-05 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/795d64fc-c521-4dec-a4f4-03d320092259 |
| Harvard University Herbaria Barcode | 00003722 |
| Herbarium | GH |
| Previous ownership | Ex Herb. William Boott. |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Aster praealtus var. angustior Wiegand |
| Verified by | Boufford, David Edward |
| Date Determined | 1983 |
| Determination Remarks | [filed under] |
| Taxon Reference | (for Aster praealtus var. angustior Wiegand) Rhodora 1933. 35: 24. |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Aster praealtus var. angustior Wiegand |
| Verified by | Jones, Almut Gitter |
| Date Determined | 1980 |
| Taxon Reference | (for Aster praealtus var. angustior Wiegand) Rhodora 1933. 35: 24. |
| Family | Asteraceae |
| Determination | Symphyotrichum praealtum var. angustior (Wiegand) G. L. Nesom |
| Determined by | Kittredge, Walter Tobey |
| Date Determined | 2017 |
| Determination Remarks | [current name] |
| Family | Asteraceae |
| Determination | Aster praealtus var. angustior Wiegand |
| Determined by | Semple, John C. |
| Date Determined | 1981-06-** |
| Family | Asteraceae |
| Determination | Aster praealtus Poiret |
| Determined by | Jones, Almut Gitter |
| Date Determined | 1980 |
| Annotation Text | with introgression of A. longifolium Lam. |
| Family | Asteraceae |
| Determination | Aster praealtus var. angustior Wiegand |
| Determined by | Wiegand, Karl McKay |
| Date Determined | 1930-01-** |
| Annotation Text | Type specimen |
| Family | Asteraceae |
| Determination | Aster salicifolius Aiton |
| Determined by | [annotation on prevenance label] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
