Index to Common Plant Names: O

Index to Common Names

Common Name	Scientific Name
Oak-leaf ivy	Cissus rhombifolia
Obedient plant	Physostegia virginiana
Oberonia orchid	Oberonia setigera
Ocahui	Agave ocahui
Ocotillo	Fouquieria splendens
Odontoglossum orchid	Odontoglossum
Oklahoma redbud	Cercis canadensis
Old gold juniper	Juniperus chinensis
Old man cactus	Cephalocereus senilis
Oleander	Nerium oleander
Olive tree	Oleo europea
Oliver's touch me not	Impatiens oliveri
Olulu	Brighamia insignis
Omphalodes	Omphalodes cappadocica
Oncidium orchid	Oncidium
Ondontonema	Odontonema sp.
Opuntia	Opuntia pycnantha var. marginata
Orange African daisy	Arctotis hybrid
Orange bells	Tecoma x alata
Orange bulbine	Bulbine frutescens
Orange cestrum	Cestrum aurantiacum
Orange clock vine	Thunbergia gregorii
Orange delight	Brassada
Orange mallow	Sphaeralcea incana
Orchid cactus	Epiphyllum sp.
Orchid rockrose	Cistus x purpureus
Orchid tree	Bauhinia variegata
Orchid vine	Stigmaphyllon ciliatum
Oregano	Origanum microphyllum
Oregon grape	Mahonia aquifolium
Organ Mountain giant hyssop	Agastache pringlei var. verticillata
Oriental hybrid lily	Lilium sp.
Oriental lily	Lilium speciosum
Ornamental asparagus	Asparagus retrofractus
Ornamental kale	Brassica oleracea
Ornamental millet	Milium effusum
Ornamental oregano	Origanum laevigatum
Ornamental pear	Pyrus calleryana
Ornamental pepper	Capsicum annuum
Otter bush	Gomphostigma virgatum
Our Lord's candle	Yucca whipplei
Owl's eyes cactus	Mammillaria parkinsonii
Oxalis	Oxalis sp.