| Collector | Laegaard, S. |
| Number | 21721 |
| Collected with | M. Norsangsri |
| Country | Thailand |
| Subpart | CHIANG MAI |
| County | |
| Locality | Along road to Doi Intranon, near Visitors Center 1-2 km inside park, disturbed ground |
| Coordinates | 18° 30' N 98° 40' E |
| Minimum elevation (m) | 425 |
| Maximum elevation (m) | 425 |
| Start date | 2001/10/15 |
| End date | 2001/10/15 |
| Family | Poaceae |
| Identification | Ischaemum rugosum Salisb. |
| Determined by | Veldkamp, J. 2003, on dubl. |
| Identification qualifier | |
| Field notes | Riverside, in sand, shrubby, ca 60-70 cm |
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