| Collector | La-ongsri, W. |
| Number | 2945 |
| Collected with | M. Norsaengsri, P. Panyachan, P. Tatiya, S. Satatha |
| Country | Thailand |
| Subpart | Phayao |
| County | |
| Locality | Tham Pha Daeng, Rom Yen Sub-district, Chiang Kham District |
| Coordinates | |
| Minimum elevation (m) | 491 |
| Maximum elevation (m) | 491 |
| Start date | 2013/06/18 |
| End date | 2013/06/18 |
| Family | Euphorbiaceae |
| Identification | Macaranga siamensis S.J.Davies |
| Determined by | |
| Identification qualifier | |
| Field notes | Tree ca. 12 m high in evergreen forest. Flowers green. Fruits green. |
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