O. pubescens

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