| Name | Dipterocarpus caudatus subsp. penangianus (Foxworthy) P. S. Ashton |
| Authorship | (Foxworthy) P. S. Ashton |
| Rank | Subspecies |
| Placed in | Dipterocarpus caudatus Foxworthy |
| Citation | 1978 Gard. Bull. Singapore 31(1): 8 |
| Holdings | 11 Specimens held in the Harvard University Herbaria identified as Dipterocarpus caudatus subsp. penangianus (Foxworthy) P. S. Ashton |
| Identification made in | [no date] (11) |