| Classification | Hydrangeaceae: Philadelphus |
| Harvard University Herbaria Barcode(s) | 00042891 |
| Type Status | Holotype |
| Collector | A. Rehder |
| Collector number | 5854 |
| 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 | Arb. [Arnold Arboretum, Jamaica Plain] |
| Date Collected | 1912-06-24 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/b9f97889-9fff-45b1-a216-80e34b3a7e4b |
| Harvard University Herbaria Barcode | 00042891 |
| Herbarium | A |
| Family | Hydrangeaceae |
| Determination | Philadelphus sp. |
| Determination Remarks | [is label name] |
| Annotation Text | Philadelphus laxus x columbianus? |
| Family | Hydrangeaceae |
| Determination | Philadelphus ×congestus Rehder |
| Determined by | [A. Rehder (scripsit) W. T. Kittredge, 2019] |
| Determination Remarks | [is Current name] |
| Annotation Text | type (P. laxus x verrucosus) |
| Family | Hydrangeaceae |
| Type Status | Holotype |
| Holotype of | Philadelphus ×congestus Rehder |
| Verified by | Kittredge, Walter Tobey |
| Date Determined | 2019 |
| Determination Remarks | [is filed under name] |
| Taxon Reference | (for Philadelphus ×congestus Rehder) J. Arnold Arbor. 1920. 1: 200. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
