| Collector | Lewis, G.P. |
| Number | 306 |
| Collected with | |
| Country | Malaysia |
| Subpart | Sarawak |
| County | |
| Locality | ¤th Divisoin. Royal Georgraphical Society Gunong Mulu National Park Expedition. Sub-camp 5. Melinau Gorge. On S Melinau bank clambering over Lewis 305(Cassia alata) |
| Coordinates | |
| Minimum elevation (m) | 420 |
| Maximum elevation (m) | 420 |
| Start date | 1977/10/11 |
| End date | 1977/10/11 |
| Family | Fabaceae |
| Identification | Mastersia bakeri Backer ex Koord. |
| Determined by | Ashley N. Egan (US) 2018 |
| Identification qualifier | |
| Field notes | Large woody climber scrambling over other riverside plants. Leaves dark green above, pale green below with prominent raised veination. Pods flattened with slightly darker crimson. Standard petal with a yellow blotch at the base on the inside Keel longer than wings. Fairly common along bank |
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