| abelmoschus esculentus | Yes | species | eukaryota | plants | species | 455045 | click here |
| abelmoschus manihot | Yes | species | eukaryota | plants | species | 183220 | click here |
| abies | Yes | | | plants | genus | 3319 | click here |
| abies alba | Yes | species | eukaryota | plants | species | 45372 | click here |
| abies koreana | Yes | species | eukaryota | plants | species | 97170 | click here |
| abies lasiocarpa | Yes | species | eukaryota | plants | species | 34340 | click here |
| abies nordmanniana | Yes | species | eukaryota | plants | species | 97177 | click here |
| abutilon theophrasti | Yes | species | eukaryota | plants | species | 3631 | click here |
| acacia | Yes | | | plants | genus | 3808 | click here |
| acacia crassicarpa | Yes | species | eukaryota | plants | species | 499986 | click here |
| acacia hindsii | Yes | species | eukaryota | plants | species | 223432 | click here |
| acalypha indica | Yes | species | | | species | 478095 | click here |
| acanthaster planci | Yes | species | eukaryota | invertebrates | species | 133434 | click here |
| acanthus ilicifolius | Yes | species | eukaryota | plants | species | 328098 | click here |
| acca sellowiana | Yes | species | eukaryota | plants | species | 260130 | click here |
| acer | Yes | | | plants | genus | 4022 | click here |
| acer campestre | Yes | species | eukaryota | plants | species | 66205 | click here |
| acer macrophyllum | Yes | species | eukaryota | plants | species | 66211 | click here |
| acer negundo | Yes | species | eukaryota | plants | species | 4023 | click here |
| acer opalus | Yes | species | eukaryota | plants | species | 168567 | click here |
| acer palmatum | Yes | species | eukaryota | plants | species | 66201 | click here |
| acer pictum subsp. mono | Yes | species | eukaryota | plants | species | 47963 | click here |
| acer pseudoplatanus | Yes | species | eukaryota | plants | species | 4026 | click here |
| acer tataricum subsp. ginnala | Yes | subspecies | eukaryota | plants | subspecies | 57656 | click here |
| acer truncatum | Yes | species | eukaryota | plants | species | 47965 | click here |
| achillea | Yes | | | plants | genus | 13328 | click here |
| achillea millefolium | Yes | species | eukaryota | plants | species | 13329 | click here |
| achlys triphylla | Yes | species | eukaryota | plants | species | 63345 | click here |
| achyranthes aspera | Yes | species | eukaryota | plants | species | 240005 | click here |
| achyranthes bidentata | Yes | species | eukaryota | plants | species | 384659 | click here |
| aconitum | Yes | | | plants | genus | 49188 | click here |
| aconitum carmichaelii | Yes | species | eukaryota | plants | species | 85363 | click here |
| aconitum heterophyllum | Yes | species | eukaryota | plants | species | 279769 | click here |
| acorus calamus | Yes | species | eukaryota | plants | species | 4465 | click here |
| acromyrmex crassispinus | Yes | species | eukaryota | invertebrates | species | 230684 | click here |
| acropora formosa | Yes | species | eukaryota | invertebrates | species | 126732 | click here |
| actaea dahurica | Yes | species | eukaryota | plants | species | 64029 | click here |
| actaea spicata | Yes | species | eukaryota | plants | species | 64025 | click here |
| actiniaria | Yes | | | invertebrates | order | 6103 | click here |
| actinidia arguta | Yes | species | eukaryota | plants | species | 64478 | click here |
| actinidia chinensis | Yes | species | eukaryota | plants | species | 3625 | click here |
| actinidia deliciosa | Yes | species | eukaryota | plants | species | 3627 | click here |
| actinotrichia fragilis | Yes | species | eukaryota | plants | species | 268562 | click here |
| adansonia digitata | Yes | species | eukaryota | plants | species | 69109 | click here |
| adansonia gregorii | Yes | species | eukaryota | plants | species | 69110 | click here |
| adenocystis utricularis | Yes | species | eukaryota | plants | species | 64923 | click here |
| adonis vernalis | Yes | species | eukaryota | plants | species | 46985 | click here |
| aedes aegypti | Yes | species | eukaryota | invertebrates | species | 7159 | click here |
| aegiceras corniculatum | Yes | species | eukaryota | plants | species | 59970 | click here |
| aegilops columnaris | Yes | species | eukaryota | plants | species | 4493 | click here |
| aegilops triuncialis | Yes | species | eukaryota | plants | species | 39391 | click here |
| aegle marmelos | Yes | species | eukaryota | plants | species | 68527 | click here |
| aeluropus lagopoides | Yes | species | eukaryota | plants | species | 293749 | click here |
| aerva javanica | Yes | species | eukaryota | plants | species | 240009 | click here |
| aeschynomene fluminensis | Yes | species | eukaryota | plants | species | 561486 | click here |
| aesculus californica | Yes | species | eukaryota | plants | species | 307252 | click here |
| aesculus chinensis | Yes | species | eukaryota | plants | species | 290911 | click here |
| aesculus turbinata | Yes | species | eukaryota | plants | species | 83375 | click here |
| agapanthus | Yes | | | plants | genus | 51426 | click here |
| agapornis | Yes | | | vertebrates | genus | 60461 | click here |
| agaricus bisporus | Yes | species | eukaryota | plants | species | 5341 | click here |
| agathis macrophylla | Yes | species | eukaryota | plants | species | 56990 | click here |
| agave americana | Yes | species | eukaryota | plants | species | 39510 | click here |
| agave salmiana | Yes | species | eukaryota | plants | species | 332343 | click here |
| agave sisalana | Yes | species | eukaryota | plants | species | 442491 | click here |
| agave tequilana | Yes | species | eukaryota | plants | species | 386106 | click here |
| agelas oroides | Yes | species | eukaryota | invertebrates | species | 72715 | click here |
| ageratina adenophora | Yes | species | eukaryota | plants | species | 176616 | click here |
| ageratum | Yes | | | plants | genus | 55597 | click here |
| ageratum houstonianum | Yes | species | eukaryota | plants | species | 55598 | click here |
| aglaia elaeagnoidea | Yes | species | eukaryota | plants | species | 201007 | click here |
| aglaonema commutatum | Yes | species | | | species | 1210880 | click here |
| agropyron | Yes | | | plants | genus | 4592 | click here |
| agropyron desertorum | Yes | species | eukaryota | plants | species | 382394 | click here |
| agrostis | Yes | | | plants | genus | 15297 | click here |
| agrostis capillaris | Yes | species | eukaryota | plants | species | 204232 | click here |
| agrostis stolonifera | Yes | species | eukaryota | plants | species | 63632 | click here |
| agrostis stolonifera var. palustris | Yes | varietas | eukaryota | plants | varietas | 62759 | click here |
| ailanthus | Yes | | | plants | genus | 23809 | click here |
| ailanthus altissima | Yes | species | eukaryota | plants | species | 23810 | click here |
| ailanthus excelsa | Yes | species | | | species | 1133704 | click here |
| ailuropoda melanoleuca | Yes | species | eukaryota | mammals | species | 9646 | click here |
| ajuga parviflora | Yes | species | | | species | 1585252 | click here |
| akebia trifoliata | Yes | species | eukaryota | plants | species | 155132 | click here |
| albizia julibrissin | Yes | species | eukaryota | plants | species | 3813 | click here |
| albizia lebbeck | Yes | species | eukaryota | plants | species | 371650 | click here |
| alcea rosea | Yes | species | eukaryota | plants | species | 65557 | click here |
| alcyonacea | Yes | | | invertebrates | order | 40677 | click here |
| alectryon excelsus | Yes | species | eukaryota | plants | species | 151049 | click here |
| alisma plantago-aquatica | Yes | no rank | eukaryota | plants | species | 15000 | click here |
| alisma plantago-aquatica subsp. orientale | Yes | species | eukaryota | plants | species | 262913 | click here |
| alliaria petiolata | Yes | species | eukaryota | plants | species | 126270 | click here |
| allium | Yes | | | plants | genus | 4678 | click here |
| allium ampeloprasum | Yes | species | eukaryota | plants | species | 4681 | click here |
| allium cepa | Yes | species | eukaryota | plants | species | 4679 | click here |
| allium cepa var. aggregatum | Yes | varietas | eukaryota | plants | varietas | 28911 | click here |
| allium fistulosum | Yes | species | eukaryota | plants | species | 35875 | click here |
| allium nutans | Yes | species | eukaryota | plants | species | 138328 | click here |
| allium ochotense | Yes | species | eukaryota | plants | species | 669879 | click here |
| allium sativum | Yes | species | eukaryota | plants | species | 4682 | click here |