Organic | Scientific name | Common name | Part | Origin |
| Ocimum americanum L | American Basil |
|
|
| Ocimum basilicum L | Basil | leaf | C-America |
| Ocimum canum Sims (syn Ocimum americanum L) | American Basil |
|
|
| Ocimum gratissimum L | African Basil | leaf | Africa |
| Ocimum sanctum L (syn Ocimum tenuiflorum L)Tulsi |
|
|
|
| Ocimum tenuiflorum L | Tulsi |
|
|
| Ocotea bullata (Burch) E Mey | Black Stinkwood |
| S-Africa |
| Ocotea odorifera (Vell) Rohwer | Sassafras | wood | S-America |
| Ocotea pretiosa (Nees) Mez (syn O odorifera (Vell) Rohwer) | Sassafras | wood | S-America |
| Octomeria grandiflora |
|
| Ecuador |
| Odontoglossum hallii elegans |
|
| Ecuador |
| Odontoglossum harryanum |
|
| Ecuador |
| Oenanthe aquatica (L) Lam | Fine Leaf Water Dropwort |
|
|
| Oenothera biennis L | Evening primrose |
|
|
| Oeoniella polystachys |
|
| Ecuador |
| Okoubaka aubrevillei Pellegr & Normand |
|
|
|
| Oldenlandia diffusa (Willd) Roxb |
| herb | China |
| Olea africana & europea | Olive | leaf | S-Africa |
| Olea europaea L | Olive | leaf | N-Africa |
| Oncidium abruptum |
|
| Ecuador |
| Oncidium adelaidae |
|
| Ecuador |
| Oncidium alexandrae |
|
| Ecuador |
| Oncidium armatum |
|
| Ecuador |
| Oncidium aspidorhinum |
|
| Ecuador |
| Oncidium astranthum |
|
| Ecuador |
| Oncidium aurarium |
|
| Ecuador |
| Oncidium baueri |
|
| Ecuador |
| Oncidium beyrodtioides |
|
| Ecuador |
| Oncidium cariniferun |
|
| Ecuador |
| Oncidium cirrhosum |
|
| Ecuador |
| Oncidium constrictum |
|
| Ecuador |
| Oncidium cristatum |
|
| Ecuador |
| Oncidium deburghgraeveanum |
|
| Ecuador |
| Oncidium dracoceps |
|
| Ecuador |
| Oncidium epidendroides |
|
| Ecuador |
| Oncidium fasciferum |
|
| Ecuador |
| Oncidium fuscatum |
|
| Ecuador |
| Oncidium hennisii |
|
| Ecuador |
| Oncidium heterodactylum |
|
| Ecuador |
| Oncidium leopardinum |
|
| Ecuador |
| Oncidium leucochilum |
|
| Ecuador |
| Oncidium lindleyoides |
|
| Ecuador |
| Oncidium lykaiosii |
|
| Ecuador |
| Oncidium macranthum |
|
| Ecuador |
| Oncidium maduroi |
|
| Ecuador |
| Oncidium mantense |
|
| Ecuador |
| Oncidium manuelariasii |
|
| Ecuador |
| Oncidium naevium |
|
| Ecuador |
| Oncidium nebulosum |
|
| Ecuador |
| Oncidium nobile |
|
| Ecuador |
| Oncidium noezlianum |
|
| Ecuador |
| Oncidium oliganthum |
|
| Ecuador |
| Oncidium ornithorhynchum |
|
| Ecuador |
| Oncidium pastasae |
|
| Ecuador |
| Oncidium peltiforme |
|
| Ecuador |
| Oncidium planilabre |
|
| Ecuador |
| Oncidium portilloides |
|
| Ecuador |
| Oncidium portmannii |
|
| Ecuador |
| Oncidium praestanoides |
|
| Ecuador |
| Oncidium pyramidale |
|
| Ecuador |
| Oncidium reichenheimii 'Mexico' |
|
| Ecuador |
| Oncidium reversoides |
|
| Ecuador |
| Oncidium roseum 'Ecuagenera' |
|
| Ecuador |
| Oncidium sceptrum |
|
| Ecuador |
| Oncidium sergii |
|
| Ecuador |
| Oncidium spectatissimum |
|
| Ecuador |
| Oncidium sphacelatum |
|
| Ecuador |
| Oncidium strictum |
|
| Ecuador |
| Oncidium tenuoides |
|
| Ecuador |
| Oncidium tigroides |
|
| Ecuador |
| Oncidium tipuloides |
|
| Ecuador |
| Oncidium toachicum |
|
| Ecuador |
| Oncidium trinasutum |
|
| Ecuador |
| Oncidium vulcanicum |
|
| Ecuador |
| Oncidium x bockemuhliae |
|
| Ecuador |
| Ongokea gore (Hua) Pierre | Boleko Nut | nut | W-Africa |
| Onobrychis viciifolia Scop | Sainfoin | seed | MidEast |
| Ononis arvensis L | Field Restharrow | root | E-Europe |
| Ononis natrix L | Yellow Restharrow | herb | N-Africa |
| Ononis spinosa L | Restharrow |
|
|
| Onopordum acanthium L | Scottish Thistle | herb | E-Europe |
| Operculina macrocarpa (L) Urb | Jalapa | root | S-America |
| Ophiopogon japonicus (Thunb) Ker-Gawl | Dwarf Lilyturf | root | China |
| Oplopanax elatus (Nakai) Nakai | Japanese Devil's Club | herb | E-Europe |
| Oplopanax horridus (Sm) Miq | Devil's Club | root bark WC, cut | N-America |
| Opuntia acanthocarpa(Cylindropuntia acanthocarpa) | buckhorn cholla |
| America |
| Opuntia articulatus |
|
| America |
| Opuntia basilaris | Opuntia basilaris, beavertail pricklypear |
| America |
| Opuntia bergeriana |
|
| America |
| Opuntia bigelowii(Cylindropuntia bigelovii) | teddy bear cholla |
| America |
| Opuntia bonnieae |
|
| America |
| Opuntia bulbispina |
|
| America |
| Opuntia clavata(Austrocactus spiniflorus) |
|
| America |
| Opuntia cochenillifera (L) Mill (syn Nopalea cochenillifera (L) Salm-Dyck) | Cochineal Nopal Cactus | leaf | C-America |
| Opuntia corrugata |
|
| America |
| Opuntia echinocarpa(Cylindropuntia echinocarpa) | cholla, golden cholla, Wiggins cholla |
| America |
| Opuntia elata |
|
| America |
| Opuntia erinacea | Mojave prickly pear, grizzlybear Cactus |
| America |
| Opuntia ficus-indica | prickly pear |
| America |
| Opuntia ficus-indica (L) Miller | Indian Fig | leaf powder | N-Africa |
| Opuntia fragilis | brittle pricklypear, little prickly pear |
| America |
| Opuntia guatemalensis Britton & Rose | Prickly pear | fruit | C-America |
| Opuntia hystricina(Opuntia polyacantha) | Hairspine, Pan handle |
| America |
| Opuntia imbricata(Cylindropuntia imbricata) | cane cholla, walking stick cholla, Tree cholla, Chainlink cactus | America |
| Opuntia kleiniae |
|
| America |
| Opuntia kuntzei(Pterocactus kuntzei) |
|
| America |
| Opuntia longispina(Tunilla corrugata) |
|
| America |
| Opuntia macrocentra | Black-Spine Prickly Pear, Purple Pricklypear |
| America |
| Opuntia macrorhiza | Plains Prickly Pear, twistspine pricklypear, Western pricklypear | America |
| Opuntia marenae(Grusonia marenae) |
|
| America |
| Opuntia microdasys | albata, Albispina |
| America |
| Opuntia microsphaerica(Tephrocactus microsphaerica, Tunilla microsphaerica) |
|
| America |
| Opuntia miquelii(Miqueliopuntia miquelii, Cylindropuntia miquelii, Maihueniopsis miquelii, Austrocylindropuntia miquelii) |
| America |
| Opuntia moelleri(Corynopuntia moelleriana) |
|
| America |
| Opuntia moniliformis |
|
| America |
| Opuntia ovata(Maihueniopsis ovata) | prickly pear |
| America |
| Opuntia phaeacantha | tulip prickly pear, desert prickly pear |
| America |
| Opuntia rhodantha | Snow ball cactus |
| America |
| Opuntia rubescens |
|
| America |
| Opuntia rutila |
|
| America |
| Opuntia salmiana |
|
| America |
| Opuntia scheerii |
|
| America |
| Opuntia shaferi |
|
| America |
| Opuntia sphaerica(Cumulopuntia sphaerica) |
|
| America |
| Opuntia spinosior(Cylindropuntia spinosior) | spiny cholla, walkingstick cactus, snake cactus |
| America |
| Opuntia subulata(Austrocylindropuntia subulata) | Eve's pin, Eve's needle |
| America |
| Opuntia thurberi(Cylindropuntia thurberi) |
|
| America |
| Opuntia tilcarensis |
|
| America |
| Opuntia tortispina |
|
| America |
| Opuntia tuberosus |
|
| America |
| Opuntia tuna |
|
| America |
| Opuntia vestita | Old Man Opuntia |
| America |
| Opuntia violacea(Opuntia santa-rita) | Violet pricklypear |
| America |
| Opuntia viridiflora | Opuntia viridiflora |
| America |
| Opuntia vulgaris |
|
| America |
| Opuntia weberi |
|
| America |
| Opuntia whipplei(Cylindropuntia whipplei) | Whipple cholla |
| America |
bio | Orchis mascula (L) L | Salep Orchid | tuber | Indian Sub |
| Orchis ssp | Salep | tuber | E-Europe |
| Oreocereus leucotrichus |
|
| America |
| Oreocereus trollii | Old Man of the Mountain, Old Man of the Andes |
| America |
| Oreocereus urmiriensis(Oreocereus celsianus) |
|
| America |
| Origanum compactum Benth | Oregano | herb | N-Africa |
| Origanum creticum L (syn Origanum vulgare L) |
|
|
|
| Origanum dictamnus L | Cretan Dittany |
| SE-Europe |
| Origanum majorana L | Sweet Marjoram |
|
|
| Origanum vulgare L | Origany |
|
|
| Origanum vulgare L subsp gracile (K Koch) Ietsw | Russian Oregano | herb | Central Asia |
| Ornithidium multicaule |
|
| Ecuador |
| Ornithidium ruberrimum |
|
| Ecuador |
| Ornithidium sophronitis |
|
| Ecuador |
| Ornithocephalus bicornis |
|
| Ecuador |
| Ornithocephalus bryostachyus |
|
| Ecuador |
| Ornithocephalus ecuadorensis |
|
| Ecuador |
| Ornithocephalus falcatus |
|
| Ecuador |
| Ornithocephalus gladiatus |
|
| Ecuador |
| Ornithocephalus inflexus |
|
| Ecuador |
| Ornithocephalus kruegeri |
|
| Ecuador |
| Orobanche virginiana L (syn Epifagus virginianaBeach DropC Barton) | (L) W P |
| N-America |
| Oroya borchersii |
|
| America |
| Oroya neoperuviana |
|
| America |
| Oroya peruviana |
|
| America |
| Orthosiphon aristatus (Blume) Miq | Cat's Whiskers |
|
|
| Orthosiphon stamineus Benth (syn Orthosiphon Cat's Whiskers | aristatus (Blume) Miq) |
|
|
| Oryza sativa L |
| fruit | China |
| Osmitopsis asteriscoides (L ) Cass | Bell's Herb | herb | S-Africa |
| Ostrya virginiana (Mill) K Koch | American Hop-Hornbeam |
|
|
| Otoglossum brevifolium |
|
| Ecuador |
| Oxalis acetosella L | European Wood Sorrel |
|
|
| Oxalis stricta L | Upright Yellow Sorrel |
| N-America |
| Oxystophyllum atropurpureum |
|
| Ecuador |