| Classification | Asteraceae: Aster |
| Classification 1 | Asteraceae: Tripolium |
| Classification 2 | Asteraceae: Aster |
| Classification 3 | Asteraceae: Symphyotrichum |
| Classification 4 | Asteraceae: Tripolium |
| Complex Object | This is a complex collection object (2 items with 1 preparation) |
| Harvard University Herbaria Barcode(s) | 00872213 |
| Other Barcodes on Sheet | 00013250 |
| Type Status | Isolectotype, Probable TypeMaterial |
| Collector | T. Nuttall |
| Country | United States of America |
| Geography | North America: North America (CA, US, MX) (Region): United States of America |
| Locality | [protologue: "By the margins of muddy ponds in the Rocky Mountains"] |
| Elevation | 2134 m |
| Verbatim Elevation | [7000 feet] |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/e8fc8cf8-4f68-44b3-a4e5-0fea73e135f9 |
| Harvard University Herbaria Barcode | 00872213 |
| Herbarium | GH |
| Previous ownership | Coll. Nuttall. Presented by Elias Durand, 1866. |
| Family | Asteraceae |
| Determination | Aster occidentalis (Nuttall) Torrey & A. Gray |
| Determined by | Jones, Almut Gitter |
| Family | Asteraceae |
| Determination | Tripolium occidentale Nuttall |
| Determined by | Cronquist, Arthur John |
| Date Determined | 1940 |
| Annotation Text | Isotype |
| Family | Asteraceae |
| Determination | Aster occidentalis (Nuttall) Torrey & A. Gray |
| Determined by | Cronquist, Arthur John |
| Date Determined | 1940 |
| Annotation Text | var. typicum Cronq. ined. |
| 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 | Isolectotype |
| Isolectotype of | Tripolium occidentale Nuttall |
| Verified by | Jones, Almut Gitter |
| Determination Remarks | [is filed under name] |
| Taxon Reference | (for Tripolium occidentale Nuttall) Trans. Amer. Philos. Soc. 1840. 7: 296. |
| Family | Asteraceae |
| Type Status | Probable TypeMaterial |
| Probable TypeMaterial of | Tripolium occidentale Nuttall |
| Verified by | Boufford, David Edward |
| Date Determined | 1982 |
| Taxon Reference | (for Tripolium occidentale Nuttall) Trans. Amer. Philos. Soc. 1840. 7: 296. |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
