| Collector | Madsen, E. B. |
| Number | 84302 |
| Collected with | |
| Country | Ecuador |
| Subpart | IMBABURA |
| County | |
| Locality | San Luis de Imbaya, Rio Chorlavi, 4 km NW of Ibarra. Dry river valley, dominated by Acacia, Croton, Agave. |
| Coordinates | 0° 23' N 78° 8' W |
| Minimum elevation (m) | 1960 |
| Maximum elevation (m) | 1960 |
| Start date | 1988/09/29 |
| End date | 1988/09/30 |
| Family | Fabaceae |
| Identification | Acacia macracantha Humb.& Bonpl. ex Willd. |
| Determined by | |
| Identification qualifier | |
| Field notes | Shrub, 2 m. Sterile. Cortex greenish brown. New shoots and spines dark red, soft. Spines straight, to 10 cm long. Older spines greyish brown. |
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