Not Established

	Common name (English)
Opuntia humifusa	Eastern prickly-pear
Oreochromis aureus	Blue tilapia
Oreochromis niloticus	Nile tilapia, Nile mouthbreeder
Origanum dictamnus	Cretan dittany
Oryza sativa	rice, Asian rice
Osmanthus heterophyllus	Chinese-holly
Ostorhinchus fasciatus	Bar-striped Cardinalfish
Ovis aries	Domestic sheep
Oxalis latifolia	Garden Pink-Sorrel
Oxyura jamaicensis	Ruddy Duck
Oxyurichthys petersii	Frogface goby
Pachycereus pringlei	Cardón Cactus
Paliurus spina-christi	Jerusalem thorn, Christ's thorn
Palola valida
Pandorea jasminoides	Bowerplant
Panicum capillare	Witch grass, Witch-Grass
Panicum decompositum	Australian millet
Panicum miliaceum	Proso millet, Chinese millet
Papaver somniferum	Opium poppy, Breadseed poppy
Paraleucilla magna