| Collector | Maxwell, J.F. |
| Number | 91-856 |
| Collected with | |
| Country | Thailand |
| Subpart | Prae |
| County | |
| Locality | Song District. Mae Yom National Park, Huay Lie area, Dow Boon Subdistrict, ridge above Yom River. Partly shaded area in deciduous, mostly teak, forest; shale bedrock. |
| Coordinates | |
| Minimum elevation (m) | 225 |
| Maximum elevation (m) | 225 |
| Start date | 1991/10/09 |
| End date | 1991/10/09 |
| Family | Lamiaceae |
| Identification | Hymenopyramis brachiata Wall. ex Griff. |
| Determined by | B. Bongcheewin |
| Identification qualifier | |
| Field notes | Scandent, stems 4-5 m long, basal diameters 8-9 cm; bark thin, smooth to flaking, light brown; infructescence axes greyish; fruiting calyx greyish-tan; blades dark green above, greyish-light greenish underneath. |
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