| Collector | Christensen, H. M. |
| Number | 20 |
| Collected with | F. L. Apu |
| Country | Malaysia |
| Subpart | SARAWAK |
| County | |
| Locality | 4th division, Kelabit Highlands. Old secondary forest in Ramudu area |
| Coordinates | 3° 40' N 115° 50' E |
| Minimum elevation (m) | 900 |
| Maximum elevation (m) | 900 |
| Start date | 1993/01/22 |
| End date | 1993/01/22 |
| Family | Piperaceae |
| Identification | Piper porphyrophyllum (Lindl.)N.E. |
| Determined by | Christensen, H. |
| Identification qualifier | |
| Field notes | Slender climper. Upperside of leaves are dark green with pale pink nervation patterns. Underside of leaves are purple. Uses: Medicinal, the leaves are used against sprains. Name in Kelabit language: Buyo Siah. |