O
- Olea europaea
- Oleander Nerium oleander
- Oleander Nerium oleander
- Oleander (Dunham) Nerium oleander (Dunham)
- Oleander (Fincke) Nerium oleander (Fincke)
- Oleandra pilosa
- Olearia phlogopappa
- Olivenbaum Olea europaea
- Olivetree Olea europaea
- Olnd. (Dunham) Nerium oleander (Dunham)
- Olnd. (Fincke) Nerium oleander (Fincke)
- Overberg pincushion Leucospermum oleaefolium
A (4)
O (2)
P (1)
D (1)
F (1)
P (8)
S (4)