| abies | Yes | | | plants | genus | 3319 | click here |
| abies alba | Yes | species | eukaryota | plants | species | 45372 | click here |
| abies balsamea | Yes | species | eukaryota | plants | species | 90345 | click here |
| abies koreana | Yes | species | eukaryota | plants | species | 97170 | click here |
| abies lasiocarpa | Yes | species | eukaryota | plants | species | 34340 | click here |
| abies mariesii | Yes | species | eukaryota | plants | species | 78263 | click here |
| abies nordmanniana | Yes | species | eukaryota | plants | species | 97177 | click here |
| abies procera | Yes | species | eukaryota | plants | species | 97175 | click here |
| abrus precatorius | Yes | species | eukaryota | plants | species | 3816 | click here |
| abutilon | Yes | | | plants | genus | 3630 | click here |
| abutilon theophrasti | Yes | species | eukaryota | plants | species | 3631 | click here |
| acacia | Yes | | | plants | genus | 3808 | click here |
| acacia baileyana | Yes | species | eukaryota | plants | species | 383632 | click here |
| acacia mearnsii | Yes | species | eukaryota | plants | species | 139012 | click here |
| acacia retinodes | Yes | species | | | species | 1050817 | click here |
| acacia saligna | Yes | species | eukaryota | plants | species | 420411 | click here |
| acacia suma | Yes | species | | | species | 1217423 | click here |
| acalypha diversifolia | Yes | species | eukaryota | plants | species | 681400 | click here |
| acanthophora spicifera | Yes | species | eukaryota | plants | species | 385024 | click here |
| acanthus | Yes | | | plants | genus | 13326 | click here |
| acanthus ebracteatus | Yes | species | eukaryota | plants | species | 241842 | click here |
| acanthus ilicifolius | Yes | species | eukaryota | plants | species | 328098 | click here |
| acer | Yes | | | plants | genus | 4022 | click here |
| acer campestre | Yes | species | eukaryota | plants | species | 66205 | click here |
| acer circinatum | Yes | species | eukaryota | plants | species | 66207 | click here |
| acer davidii | Yes | species | eukaryota | plants | species | 168559 | click here |
| acer glabrum | Yes | species | eukaryota | plants | species | 75744 | click here |
| acer grandidentatum | Yes | species | eukaryota | plants | species | 291206 | click here |
| acer griseum | Yes | species | eukaryota | plants | species | 168561 | click here |
| acer heldreichii | Yes | species | eukaryota | plants | species | 290837 | click here |
| acer henryi | Yes | species | eukaryota | plants | species | 168562 | click here |
| acer hyrcanum | Yes | species | eukaryota | plants | species | 290838 | click here |
| acer macrophyllum | Yes | species | eukaryota | plants | species | 66211 | click here |
| acer monspessulanum | Yes | species | eukaryota | plants | species | 168566 | click here |
| acer negundo | Yes | species | eukaryota | plants | species | 4023 | click here |
| acer opalus | Yes | species | eukaryota | plants | species | 168567 | click here |
| acer opalus subsp. obtusatum | Yes | subspecies | eukaryota | plants | subspecies | 269405 | click here |
| acer palmatum | Yes | species | eukaryota | plants | species | 66201 | click here |
| acer pensylvanicum | Yes | species | eukaryota | plants | species | 66214 | click here |
| acer platanoides | Yes | species | eukaryota | plants | species | 4025 | click here |
| acer pseudoplatanus | Yes | species | eukaryota | plants | species | 4026 | click here |
| acer rubrum | Yes | species | eukaryota | plants | species | 45314 | click here |
| acer rufinerve | Yes | species | eukaryota | plants | species | 66215 | click here |
| acer saccharinum | Yes | species | eukaryota | plants | species | 75745 | click here |
| acer saccharum | Yes | species | eukaryota | plants | species | 4024 | click here |
| acer sempervirens | Yes | species | eukaryota | plants | species | 290839 | click here |
| acer spicatum | Yes | species | eukaryota | plants | species | 57652 | click here |
| acer tataricum subsp. ginnala | Yes | subspecies | eukaryota | plants | subspecies | 57656 | click here |
| acer ukurunduense | Yes | species | eukaryota | plants | species | 171221 | click here |
| acer velutinum | Yes | species | eukaryota | plants | species | 290840 | click here |
| achillea millefolium | Yes | species | eukaryota | plants | species | 13329 | click here |
| acianthera teres | Yes | species | eukaryota | plants | species | 180092 | click here |
| aconitum heterophyllum | Yes | species | eukaryota | plants | species | 279769 | click here |
| aconitum lycoctonum | Yes | species | eukaryota | plants | species | 112589 | click here |
| acromyrmex | Yes | | | invertebrates | genus | 64782 | click here |
| acromyrmex crassispinus | Yes | species | eukaryota | invertebrates | species | 230684 | click here |
| acromyrmex echinatior | Yes | species | eukaryota | invertebrates | species | 103372 | click here |
| actiniaria | Yes | | | invertebrates | order | 6103 | click here |
| actinidia | Yes | | | plants | genus | 3624 | click here |
| actinidia arguta | Yes | species | eukaryota | plants | species | 64478 | click here |
| actinidia chinensis | Yes | species | eukaryota | plants | species | 3625 | click here |
| actinidia chinensis var. rufopulpa | Yes | varietas | eukaryota | plants | varietas | 500838 | click here |
| actinidia deliciosa | Yes | species | eukaryota | plants | species | 3627 | click here |
| actinidia glaucophylla | Yes | species | eukaryota | plants | species | 165706 | click here |
| actinidia latifolia | Yes | species | eukaryota | plants | species | 165711 | click here |
| adansonia gregorii | Yes | species | eukaryota | plants | species | 69110 | click here |
| adiantum capillus-veneris | Yes | no rank | eukaryota | plants | species | 13818 | click here |
| adinandra millettii | Yes | species | eukaryota | plants | species | 182329 | click here |
| aegiceras corniculatum | Yes | species | eukaryota | plants | species | 59970 | click here |
| aegilops speltoides subsp. speltoides | Yes | subspecies | eukaryota | plants | subspecies | 58531 | click here |
| aegle marmelos | Yes | species | eukaryota | plants | species | 68527 | click here |
| aeolesthes sarta | Yes | species | | | species | 1158783 | click here |
| aerva javanica | Yes | species | eukaryota | plants | species | 240009 | click here |
| aesculus flava | Yes | species | eukaryota | plants | species | 322040 | click here |
| aesculus hippocastanum | Yes | species | eukaryota | plants | species | 43364 | click here |
| afrocarpus falcatus | Yes | species | eukaryota | plants | species | 56897 | click here |
| agaricus bisporus | Yes | species | eukaryota | plants | species | 5341 | click here |
| agathis australis | Yes | species | eukaryota | plants | species | 58027 | click here |
| agave salmiana | Yes | species | eukaryota | plants | species | 332343 | 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 |
| aglaia elaeagnoidea | Yes | species | eukaryota | plants | species | 201007 | click here |
| agrimonia eupatoria | Yes | species | eukaryota | plants | species | 57912 | click here |
| agriophyllum squarrosum | Yes | species | eukaryota | plants | species | 240019 | click here |
| agrostis stolonifera | Yes | species | eukaryota | plants | species | 63632 | click here |
| ahnfeltiopsis flabelliformis | Yes | species | eukaryota | plants | species | 38507 | click here |
| ailanthus altissima | Yes | species | eukaryota | plants | species | 23810 | click here |
| ailuropoda melanoleuca | Yes | species | eukaryota | mammals | species | 9646 | click here |
| akebia trifoliata | Yes | species | eukaryota | plants | species | 155132 | click here |
| albizia lebbeck | Yes | species | eukaryota | plants | species | 371650 | click here |
| alliaria petiolata | Yes | species | eukaryota | plants | species | 126270 | click here |
| allium giganteum | Yes | species | eukaryota | plants | species | 70758 | click here |
| allophylus racemosus | Yes | species | | | species | 1123432 | click here |
| alnus | Yes | | | plants | genus | 3515 | click here |
| alnus acuminata | Yes | species | eukaryota | plants | species | 109057 | click here |
| alnus alnobetula | Yes | species | eukaryota | plants | species | 38784 | click here |
| alnus alnobetula subsp. alnobetula | Yes | subspecies | eukaryota | plants | subspecies | 492571 | click here |
| alnus alnobetula subsp. sinuata | Yes | subspecies | eukaryota | plants | subspecies | 109071 | click here |
| alnus cordata | Yes | species | eukaryota | plants | species | 109058 | click here |