| Collector | Holm-Nielsen, L. B. |
| Number | 4743 |
| Collected with | Jeppesen, S. & Lojtnant, B. & Ollgaard, B. |
| Country | Ecuador |
| Subpart | LOJA |
| County | |
| Locality | Km 66 on Pan American Highway N of Loja. Steep rocky slopes with debris, very dry, dominated by Agave and grasses. |
| Coordinates | 3° 34' S 79° 10' W |
| Minimum elevation (m) | 2400 |
| Maximum elevation (m) | 2400 |
| Start date | 1973/05/03 |
| End date | 1973/05/03 |
| Family | Rubiaceae |
| Identification | Arcytophyllum thymifolium (R. & P. )Standley |
| Determined by | J. Dwyer, 1980 |
| Identification qualifier | |
| Field notes | Small shrub in grass-vegetation. Corolla tetramerous, white. |
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