| Collector | La-ongsri, W. |
| Number | 4042 |
| Collected with | P. Punyachan, T. Pingyot, T. S. Satatha |
| Country | Thailand |
| Subpart | Lampang |
| County | |
| Locality | M. 5, Ban Pha Daeng, Tham Pha Thai National Park, Ban Rong Sub-District, Ngao district |
| Coordinates | |
| Minimum elevation (m) | 959 |
| Maximum elevation (m) | 959 |
| Start date | 2015/03/26 |
| End date | 2015/03/26 |
| Family | Sterculiaceae |
| Identification | Pterospermum grandiflorum Craib |
| Determined by | |
| Identification qualifier | |
| Field notes | Tree 8 m high on limestone in mixed deciduous forest. Fruit brown. |