| opuntia ficus-indica | Yes | no rank | eukaryota | plants | species | 371859 | click here |
| orchidaceae | Yes | | | plants | family | 4747 | click here |
| oreochromis mossambicus | Yes | species | eukaryota | vertebrates | species | 8127 | click here |
| oribatella quadricornuta | Yes | species | eukaryota | invertebrates | species | 198298 | click here |
| origanum majorana | Yes | species | eukaryota | plants | species | 268884 | click here |
| origanum syriacum | Yes | species | | | species | 1082757 | click here |
| oropetium thomaeum | Yes | species | | | species | 1148796 | click here |
| oroxylum indicum | Yes | species | eukaryota | plants | species | 83951 | click here |
| orthophytum burle-marxii | Yes | species | | | species | 1485031 | click here |
| oryza rufipogon | Yes | species | eukaryota | plants | species | 4529 | click here |
| oryza sativa | Yes | species | eukaryota | plants | species | 4530 | click here |
| oryza sativa japonica group | Yes | no rank | eukaryota | plants | no rank | 39947 | click here |
| ostreidae | Yes | | | invertebrates | family | 6563 | click here |
| ostrinia nubilalis | Yes | species | eukaryota | invertebrates | species | 29057 | click here |
| ostrya carpinifolia | Yes | species | eukaryota | plants | species | 176865 | click here |
| otoba parvifolia | Yes | species | eukaryota | plants | species | 224906 | click here |
| ovis aries | Yes | species | eukaryota | mammals | species | 9940 | click here |
| oxalis | Yes | | | plants | genus | 4034 | click here |
| oxytropis kansuensis | Yes | species | | | species | 545221 | click here |
| pachymatisma johnstonia | Yes | species | eukaryota | invertebrates | species | 77183 | click here |
| pacifigorgia | Yes | | | invertebrates | genus | 204373 | click here |
| padina pavonica | Yes | species | eukaryota | plants | species | 531984 | click here |
| padina sp. | Yes | species | | | species | 2010982 | click here |
| padina tetrastromatica | Yes | species | | | species | 1111689 | click here |
| paliurus spina-christi | Yes | no rank | eukaryota | plants | species | 106693 | click here |
| palmaria palmata | Yes | species | eukaryota | plants | species | 2822 | click here |
| palythoa caribaeorum | Yes | species | eukaryota | invertebrates | species | 134933 | click here |
| palythoa variabilis | Yes | species | eukaryota | invertebrates | species | 86597 | click here |
| panax ginseng | Yes | species | eukaryota | plants | species | 4054 | click here |
| panax notoginseng | Yes | species | eukaryota | plants | species | 44586 | click here |
| panax sokpayensis | Yes | species | | | species | 1620823 | click here |
| panicum hallii | Yes | species | eukaryota | plants | species | 206008 | click here |
| panicum virgatum | Yes | species | eukaryota | plants | species | 38727 | click here |
| panthera pardus | Yes | species | eukaryota | mammals | species | 9691 | click here |
| panthera uncia | Yes | species | eukaryota | mammals | species | 29064 | click here |
| papaver somniferum | Yes | species | eukaryota | plants | species | 3469 | click here |
| paracoccus marginatus | Yes | species | eukaryota | invertebrates | species | 252483 | click here |
| paris polyphylla | Yes | species | eukaryota | plants | species | 49666 | click here |
| parkinsonia aculeata | Yes | species | eukaryota | plants | species | 58886 | click here |
| parmelia | Yes | | | plants | genus | 87260 | click here |
| parmotrema reticulatum | Yes | species | eukaryota | plants | species | 172642 | click here |
| parthenium | Yes | | | plants | genus | 35934 | click here |
| paspalum wrightii | Yes | species | eukaryota | plants | species | 547456 | click here |
| passiflora edulis | Yes | species | eukaryota | plants | species | 78168 | click here |
| paullinia cupana | Yes | species | eukaryota | plants | species | 392747 | click here |
| pavo cristatus | Yes | species | eukaryota | vertebrates | species | 9049 | click here |
| pectinophora gossypiella | Yes | species | eukaryota | invertebrates | species | 13191 | click here |
| peganum harmala | Yes | species | eukaryota | plants | species | 43879 | click here |
| pelagia noctiluca | Yes | species | eukaryota | invertebrates | species | 400838 | click here |
| pelargonium zonale | Yes | species | eukaryota | plants | species | 4032 | click here |
| penicillium sp. | Yes | species | eukaryota | plants | species | 5081 | click here |
| pentatomidae | Yes | | | invertebrates | family | 160513 | click here |
| pergularia tomentosa | Yes | species | eukaryota | plants | species | 264979 | click here |
| perilla frutescens | Yes | species | eukaryota | plants | species | 48386 | click here |
| periplaneta americana | Yes | species | eukaryota | invertebrates | species | 6978 | click here |
| perognathus inornatus neglectus | Yes | subspecies | eukaryota | rodents | subspecies | 306042 | click here |
| persea americana | Yes | species | eukaryota | plants | species | 3435 | click here |
| persicaria chinensis | Yes | species | eukaryota | plants | species | 54804 | click here |
| persicaria odorata | Yes | species | eukaryota | plants | species | 580473 | click here |
| persicaria sagittata | Yes | species | eukaryota | plants | species | 137696 | click here |
| petalonia fascia | Yes | species | eukaryota | plants | species | 2893 | click here |
| petrosia ficiformis | Yes | species | eukaryota | invertebrates | species | 68564 | click here |
| phakellia fusca | Yes | species | eukaryota | invertebrates | species | 515585 | click here |
| phalacrocorax capillatus | Yes | species | eukaryota | vertebrates | species | 146617 | click here |
| phalacrocorax carbo | Yes | species | eukaryota | vertebrates | species | 9209 | click here |
| phalaris arundinacea | Yes | species | eukaryota | plants | species | 96050 | click here |
| phallusia nigra | Yes | species | eukaryota | invertebrates | species | 569429 | click here |
| phascolarctos cinereus | Yes | species | eukaryota | mammals | species | 38626 | click here |
| phaseolus vulgaris | Yes | species | eukaryota | plants | species | 3885 | click here |
| philanthus triangulum | Yes | species | eukaryota | invertebrates | species | 280486 | click here |
| phlebodium pseudoaureum | Yes | species | eukaryota | plants | species | 253774 | click here |
| phlegmariurus phlegmaria | Yes | species | eukaryota | plants | species | 41007 | click here |
| phlomis aurea | Yes | species | | | species | 997702 | click here |
| phoenicopterus roseus | Yes | species | eukaryota | vertebrates | species | 435638 | click here |
| phoenix dactylifera | Yes | species | eukaryota | plants | species | 42345 | click here |
| pholidota pallida | Yes | species | | | species | 1076820 | click here |
| phragmites australis | Yes | species | eukaryota | plants | species | 29695 | click here |
| phyllanthus emblica | Yes | species | eukaryota | plants | species | 296036 | click here |
| phyllanthus niruri | Yes | species | eukaryota | plants | species | 296034 | click here |
| phyllidia coelestis | Yes | species | eukaryota | invertebrates | species | 157139 | click here |
| phyllostachys edulis | Yes | species | eukaryota | plants | species | 38705 | click here |
| phyllostegia hirsuta | Yes | species | eukaryota | plants | species | 141766 | click here |
| physalis angulata | Yes | species | eukaryota | plants | species | 113208 | click here |
| physalis peruviana | Yes | species | eukaryota | plants | species | 126903 | click here |
| picea abies | Yes | species | eukaryota | plants | species | 3329 | click here |
| picea glauca | Yes | species | eukaryota | plants | species | 3330 | click here |
| picea rubens | Yes | species | eukaryota | plants | species | 3333 | click here |
| pilosella officinarum | Yes | species | eukaryota | plants | species | 221204 | click here |
| pinus banksiana | Yes | species | eukaryota | plants | species | 3353 | click here |
| pinus densiflora | Yes | species | eukaryota | plants | species | 77912 | click here |
| pinus kesiya var. langbianensis | Yes | varietas | | | varietas | 1504333 | click here |
| pinus massoniana | Yes | species | eukaryota | plants | species | 88730 | click here |
| pinus monticola | Yes | species | eukaryota | plants | species | 3345 | click here |
| pinus mugo | Yes | species | eukaryota | plants | species | 28528 | click here |
| pinus nigra | Yes | species | eukaryota | plants | species | 58042 | click here |
| pinus pinaster | Yes | species | eukaryota | plants | species | 71647 | click here |
| pinus pinea | Yes | species | eukaryota | plants | species | 3346 | click here |
| pinus ponderosa | Yes | species | eukaryota | plants | species | 55062 | click here |
| pinus radiata | Yes | species | eukaryota | plants | species | 3347 | click here |
| pinus rigida | Yes | species | eukaryota | plants | species | 164242 | click here |