Herbs Oa-Op

Oak Quercus alba	*Oak Quercus prinus	*Oak Quercus spp.	*Oak Quercus velutina	Oak Bark Quercus robur
Oakmoss Evernia prusnatri	Oat Avena fatua	*Oat Avena sativa	Oat Bran Avena sativa	Oatstraw Avena Sativa
Obedient Plant Physostegia virginiana	Ocimum 'African Blue' Ocimum kilimandscharicum x. O. basilicum	Ocimum 'Dark Opal' Ocimum kilimandscharicum x. O. basilicum	Ocotillo Fouquieria splendens	O'Henry Peach Prunus persica var. Merrill O'Henry
Oh Mi Cha Schizandra chinensis	Oil Nut Junglans cinerea	Okra Hibiscus esculenta	Old Maid Catharanthus roseus	Old Maid's Pink Saponaria officinalis
Old Man Artemisia abrotanum	Old Man's Pepper Achillea millefolium	Old Warrior Artemisia pontica	Old Woman Artemisia absinthium	Old Woman's Broom Turnera diffusa
Oleae Folium Olea europaea	Olibanum Boswellia sacra	Olive Olea europaea	Olivier Olea europaea	Ololiuqui Rivea corymbosa
Onion Allium cepa	*Onion Allium cernuum	Onion Stinkers Allium sativum	Ontario Poplar Populus x candicans	Opium Poppy Papaver somniferum

Oa-Op    Or-Oy