O. pubescens may refer to:
- Oenothera pubescens, the South American evening-primrose, a plant species native to the Southwestern United States
- Ophryosporus pubescens, a flowering plant species found in Peru
- Opuntia pubescens, a cactus species in the genus Opuntia
- Otholobium pubescens, a plant species found in Peru
This disambiguation page lists articles associated with the same abbreviated species scientific name.
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