| Classification | Asteraceae: Aster |
| Classification 1 | Asteraceae: Tripolium |
| Classification 2 | Asteraceae: Aster |
| Classification 3 | Asteraceae: Symphyotrichum |
| Classification 4 | Asteraceae: Tripolium |
| Harvard University Herbaria Barcode(s) | 00013251 |
| Type Status | Probable TypeMaterial |
| Collector | T. Nuttall |
| Country | United States of America |
| Geography | North America: North America (CA, US, MX) (Region): United States of America |
| Locality | R. Mts. [protologue: "By the margins of muddy ponds in the Rocky Mountains"] |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/1b35eb8f-afe5-4cda-a910-ac208ae801d5 |
| Harvard University Herbaria Barcode | 00013251 |
| Herbarium | GH |
| Previous ownership | [Ex] Herb. John A. Lowell. Transferred from The Boston Society of Natural History to the Gray Herbarium of Harvard University, October 2, 1941 |
| Family | Asteraceae |
| Determination | Aster occidentalis (Nuttall) Torrey & A. Gray |
| Determined by | [annotation on sheet] |
| Family | Asteraceae |
| Determination | Tripolium occidentale Nuttall |
| Determination Remarks | [is label name] |
| Family | Asteraceae |
| Determination | Aster occidentalis (Nuttall) Torrey & A. Gray |
| Determined by | M. L. Dean |
| Date Determined | 1964 |
| Family | Asteraceae |
| Determination | Symphyotrichum spathulatum (Lindley) G. L. Nesom |
| Determined by | Kittredge, Walter Tobey |
| Date Determined | 2017 |
| Determination Remarks | [is Current name] |
| Annotation Text | var. spathulatum |
| Family | Asteraceae |
| Type Status | Probable TypeMaterial |
| Probable TypeMaterial of | Tripolium occidentale Nuttall |
| Verified by | Boufford, David Edward |
| Date Determined | 1983 |
| Determination Remarks | [is filed under name] |
| Taxon Reference | (for Tripolium occidentale Nuttall) Trans. Amer. Philos. Soc. 1840. 7: 296. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
