| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Rhododendron prinophyllum (Small) Millais x R. periclymenoides (Michx.) Shinners | T. C. Porter s.n. May 1889 | United States of America. New Jersey. Warren Co. Phillipsburg. Marble Hill, near Phillipsburg. | 02542338 |  | |
| Rhododendron prinophyllum (Small) Millais x R. periclymenoides (Michx.) Shinners | T. C. Porter s.n. 24 May 1900 | United States of America. Pennsylvania. Monroe Co. Mt. Pocono. | 02542339 |  |
