| apis mellifera | Yes | species | eukaryota | invertebrates | species | 7460 | click here |
| apis mellifera jemenitica | Yes | subspecies | eukaryota | invertebrates | subspecies | 346611 | click here |
| aplysina aerophoba | Yes | species | eukaryota | invertebrates | species | 289389 | click here |
| aplysina cavernicola | Yes | species | eukaryota | invertebrates | species | 121477 | click here |
| aplysina fistularis | Yes | species | eukaryota | invertebrates | species | 202113 | click here |
| apoidea | Yes | | | invertebrates | superfamily | 34735 | click here |
| apteryx australis | Yes | species | eukaryota | vertebrates | species | 8822 | click here |
| apteryx australis mantelli | Yes | subspecies | eukaryota | vertebrates | subspecies | 202946 | click here |
| aquilaria crassna | Yes | species | eukaryota | plants | species | 223751 | click here |
| aquilaria malaccensis | Yes | species | eukaryota | plants | species | 223753 | click here |
| aquilaria sinensis | Yes | species | eukaryota | plants | species | 210372 | click here |
| arabidopsis thaliana | Yes | species | eukaryota | plants | species | 3702 | click here |
| arabis alpina | Yes | species | eukaryota | plants | species | 50452 | click here |
| arachis | Yes | | | plants | genus | 3817 | click here |
| arachis glabrata | Yes | species | eukaryota | plants | species | 212810 | click here |
| arachis hypogaea | Yes | species | eukaryota | plants | species | 3818 | click here |
| arachnitis uniflora | Yes | species | eukaryota | plants | species | 191246 | click here |
| aralia nudicaulis | Yes | species | eukaryota | plants | species | 45207 | click here |
| araucaria angustifolia | Yes | species | eukaryota | plants | species | 56992 | click here |
| arbutus unedo | Yes | species | eukaryota | plants | species | 84005 | click here |
| archontophoenix cunninghamiana | Yes | species | eukaryota | plants | species | 679633 | click here |
| arctoscopus japonicus | Yes | species | eukaryota | vertebrates | species | 148607 | click here |
| arenicola marina | Yes | species | eukaryota | invertebrates | species | 6344 | click here |
| argemone mexicana | Yes | species | eukaryota | plants | species | 54796 | click here |
| aristida setacea | Yes | species | eukaryota | plants | species | 348251 | click here |
| armadillidium vulgare | Yes | species | eukaryota | invertebrates | species | 13347 | click here |
| arrhenatherum elatius | Yes | species | eukaryota | plants | species | 52139 | click here |
| artemisia | Yes | | | plants | genus | 4219 | click here |
| artemisia annua | Yes | species | eukaryota | plants | species | 35608 | click here |
| artemisia argyi | Yes | species | eukaryota | plants | species | 259893 | click here |
| artemisia cina | Yes | species | | | species | 1473222 | click here |
| artemisia lavandulifolia | Yes | species | eukaryota | plants | species | 637482 | click here |
| artemisia scopulorum | Yes | species | | | species | 1227640 | click here |
| artemisia thuscula | Yes | species | eukaryota | plants | species | 401939 | click here |
| artemisia vulgaris | Yes | species | eukaryota | plants | species | 4220 | click here |
| arthropoda | Yes | | | invertebrates | phylum | 6656 | click here |
| ascidiella aspersa | Yes | species | eukaryota | invertebrates | species | 201961 | click here |
| ascidiella scabra | Yes | species | | | species | 1298853 | click here |
| ascophyllum nodosum | Yes | species | eukaryota | plants | species | 52969 | click here |
| aspalathus linearis | Yes | species | eukaryota | plants | species | 155124 | click here |
| asparagopsis taxiformis | Yes | species | eukaryota | plants | species | 260499 | click here |
| asparagus racemosus | Yes | species | eukaryota | plants | species | 272846 | click here |
| asparagus virgatus | Yes | species | eukaryota | plants | species | 253809 | click here |
| aspergillus kawachii | Yes | species | eukaryota | plants | species | 40384 | click here |
| astacoidea | Yes | | | invertebrates | superfamily | 6724 | click here |
| aster spathulifolius | Yes | species | eukaryota | plants | species | 947974 | click here |
| astragalus | Yes | | | plants | genus | 20400 | click here |
| astragalus melilotoides | Yes | species | eukaryota | plants | species | 502151 | click here |
| astrogorgia | Yes | | | invertebrates | genus | 287910 | click here |
| atractylodes macrocephala | Yes | species | eukaryota | plants | species | 265785 | click here |
| atriplex canescens | Yes | species | eukaryota | plants | species | 35922 | click here |
| atta capiguara | Yes | species | eukaryota | invertebrates | species | 592320 | click here |
| atta sexdens rubropilosa | Yes | subspecies | eukaryota | invertebrates | subspecies | 64786 | click here |
| avena sativa | Yes | species | eukaryota | plants | species | 4498 | click here |
| avena sterilis subsp. ludoviciana | Yes | subspecies | eukaryota | plants | subspecies | 83445 | click here |
| avenella flexuosa | Yes | species | eukaryota | plants | species | 29672 | click here |
| aves | Yes | | | vertebrates | class | 8782 | click here |
| avicennia alba | Yes | species | eukaryota | plants | species | 139224 | click here |
| avicennia germinans | Yes | species | eukaryota | plants | species | 41378 | click here |
| avicennia marina | Yes | species | eukaryota | plants | species | 82927 | click here |
| avicennia officinalis | Yes | species | | | species | 1134458 | click here |
| axinella | Yes | | | invertebrates | genus | 12958 | click here |
| azadirachta indica | Yes | species | eukaryota | plants | species | 124943 | click here |
| bactrocera cucurbitae | Yes | species | eukaryota | invertebrates | species | 28588 | click here |
| bactrocera dorsalis | Yes | species | eukaryota | invertebrates | species | 27457 | click here |
| bactrocera oleae | Yes | species | eukaryota | invertebrates | species | 104688 | click here |
| balanophora japonica | Yes | species | | | species | 1128102 | click here |
| barleria obtusa | Yes | species | | | species | 1867747 | click here |
| basella alba | Yes | species | eukaryota | plants | species | 3589 | click here |
| bathypathes sp. | Yes | no rank | eukaryota | invertebrates | species | 86604 | click here |
| beaucarnea recurvata | Yes | species | eukaryota | plants | species | 39519 | click here |
| bemisia tabaci | Yes | species | eukaryota | invertebrates | species | 7038 | click here |
| benincasa hispida | Yes | species | eukaryota | plants | species | 102211 | click here |
| berberis vulgaris | Yes | species | eukaryota | plants | species | 258209 | click here |
| bergenia ligulata | Yes | species | | | species | 1523242 | click here |
| bertholletia excelsa | Yes | species | eukaryota | plants | species | 3645 | click here |
| beta vulgaris | Yes | species | eukaryota | plants | species | 161934 | click here |
| beta vulgaris subsp. vulgaris | Yes | subspecies | eukaryota | plants | subspecies | 3555 | click here |
| betula papyrifera | Yes | species | eukaryota | plants | species | 3507 | click here |
| betula utilis | Yes | species | eukaryota | plants | species | 228163 | click here |
| bidens pilosa | Yes | species | eukaryota | plants | species | 42337 | click here |
| bienertia cycloptera | Yes | species | eukaryota | plants | species | 224142 | click here |
| bischofia polycarpa | Yes | species | | | species | 487651 | click here |
| biston suppressaria | Yes | species | | | species | 1049282 | click here |
| bixa orellana | Yes | species | eukaryota | plants | species | 66672 | click here |
| bolbitis portoricensis | Yes | species | eukaryota | plants | species | 857764 | click here |
| bombyx mori | Yes | species | eukaryota | invertebrates | species | 7091 | click here |
| bos indicus | Yes | species | eukaryota | mammals | species | 9915 | click here |
| bos taurus | Yes | species | eukaryota | mammals | species | 9913 | click here |
| boswellia ovalifoliolata | Yes | species | eukaryota | plants | species | 613108 | click here |
| boswellia sacra | Yes | species | eukaryota | plants | species | 173701 | click here |
| bothrops insularis | Yes | species | eukaryota | vertebrates | species | 8723 | click here |
| botryllus schlosseri | Yes | species | eukaryota | invertebrates | species | 30301 | click here |
| bouteloua eriopoda | Yes | species | eukaryota | plants | species | 383921 | click here |
| bouteloua gracilis | Yes | species | eukaryota | plants | species | 48732 | click here |
| brachiaria | Yes | | | plants | genus | 59786 | click here |
| brachypodium | Yes | | | plants | genus | 15367 | click here |
| brachypodium rupestre | Yes | species | eukaryota | plants | species | 52143 | click here |
| bradypus variegatus | Yes | species | eukaryota | mammals | species | 9355 | click here |
| brassica napus | Yes | species | eukaryota | plants | species | 3708 | click here |