| brassica tournefortii | Yes | species | eukaryota | plants | species | 37661 | click here |
| brassicaceae | Yes | | | plants | family | 3700 | click here |
| braya fernaldii | Yes | species | eukaryota | plants | species | 234455 | click here |
| braya longii | Yes | species | eukaryota | plants | species | 234457 | click here |
| breynia disticha | Yes | species | eukaryota | plants | species | 271538 | click here |
| broussonetia papyrifera | Yes | species | eukaryota | plants | species | 172644 | click here |
| brugmansia aurea | Yes | species | eukaryota | plants | species | 374040 | click here |
| bruguiera gymnorhiza | Yes | species | eukaryota | plants | species | 39984 | click here |
| bryopsis | Yes | | | plants | genus | 3128 | click here |
| bucorvus abyssinicus | Yes | species | eukaryota | vertebrates | species | 153643 | click here |
| bupleurum chinense | Yes | species | eukaryota | plants | species | 52451 | click here |
| bupleurum rotundifolium | Yes | species | eukaryota | plants | species | 90446 | click here |
| buxus sempervirens | Yes | species | eukaryota | plants | species | 4002 | click here |
| cajanus cajan | Yes | species | eukaryota | plants | species | 3821 | click here |
| cakile maritima | Yes | species | eukaryota | plants | species | 220483 | click here |
| calamagrostis | Yes | | | plants | genus | 15376 | click here |
| calendula officinalis | Yes | species | eukaryota | plants | species | 41496 | click here |
| calibrachoa | Yes | | | plants | genus | 323105 | click here |
| calicotome villosa | Yes | species | eukaryota | plants | species | 49799 | click here |
| callistephus chinensis | Yes | species | eukaryota | plants | species | 13379 | click here |
| calluna vulgaris | Yes | species | eukaryota | plants | species | 13385 | click here |
| calotropis gigantea | Yes | species | eukaryota | plants | species | 4066 | click here |
| calotropis procera | Yes | species | eukaryota | plants | species | 141467 | click here |
| camellia | Yes | | | plants | genus | 4441 | click here |
| camellia oleifera | Yes | species | eukaryota | plants | species | 385388 | click here |
| camellia sinensis | Yes | species | eukaryota | plants | species | 4442 | click here |
| campanula medium | Yes | species | eukaryota | plants | species | 56154 | click here |
| campanula rapunculoides | Yes | species | eukaryota | plants | species | 209536 | click here |
| campanula takesimana | Yes | species | eukaryota | plants | species | 989334 | click here |
| campanula trachelium | Yes | species | eukaryota | plants | species | 85178 | click here |
| camptotheca acuminata | Yes | species | eukaryota | plants | species | 16922 | click here |
| canis lupus familiaris | Yes | subspecies | eukaryota | mammals | subspecies | 9615 | click here |
| cannabis sativa | Yes | species | eukaryota | plants | species | 3483 | click here |
| capparis spinosa | Yes | species | eukaryota | plants | species | 65558 | click here |
| capra hircus | Yes | species | eukaryota | mammals | species | 9925 | click here |
| capsella bursa-pastoris | Yes | no rank | eukaryota | plants | species | 3719 | click here |
| capsicum | Yes | | | plants | genus | 4071 | click here |
| capsicum annuum | Yes | species | eukaryota | plants | species | 4072 | click here |
| capsicum annuum var. annuum | Yes | varietas | eukaryota | plants | varietas | 40321 | click here |
| capsicum frutescens | Yes | species | eukaryota | plants | species | 4073 | click here |
| caragana microphylla | Yes | species | eukaryota | plants | species | 220690 | click here |
| carallia brachiata | Yes | species | eukaryota | plants | species | 61141 | click here |
| cardamine hirsuta | Yes | species | eukaryota | plants | species | 50463 | click here |
| carica papaya | Yes | species | eukaryota | plants | species | 3649 | click here |
| caroxylon passerinum | Yes | species | eukaryota | plants | species | 151258 | click here |
| carpinus betulus | Yes | species | eukaryota | plants | species | 12990 | click here |
| carthamus tinctorius | Yes | species | eukaryota | plants | species | 4222 | click here |
| carum carvi | Yes | species | eukaryota | plants | species | 48032 | click here |
| carya cathayensis | Yes | species | eukaryota | plants | species | 139927 | click here |
| carya illinoinensis | Yes | species | eukaryota | plants | species | 32201 | click here |
| caryophyllaceae | Yes | | | plants | family | 3568 | click here |
| caryota mitis | Yes | species | eukaryota | plants | species | 4714 | click here |
| cassia | Yes | | | plants | genus | 53851 | click here |
| cassia fistula | Yes | species | eukaryota | plants | species | 53852 | click here |
| castanea sativa | Yes | species | eukaryota | plants | species | 21020 | click here |
| castor | Yes | | | rodents | genus | 10184 | click here |
| catananche caerulea | Yes | species | eukaryota | plants | species | 114285 | click here |
| catharanthus roseus | Yes | species | eukaryota | plants | species | 4058 | click here |
| celosia cristata | Yes | species | eukaryota | plants | species | 124768 | click here |
| celtica gigantea | Yes | species | eukaryota | plants | species | 487940 | click here |
| celtis australis | Yes | species | eukaryota | plants | species | 236733 | click here |
| cenchrus ciliaris | Yes | species | eukaryota | plants | species | 35872 | click here |
| centaurea | Yes | | | plants | genus | 41503 | click here |
| centaurea solstitialis | Yes | species | eukaryota | plants | species | 347529 | click here |
| centaurea stoebe | Yes | species | eukaryota | plants | species | 72152 | click here |
| cephalaria | Yes | | | plants | genus | 183558 | click here |
| cephalotaxus hainanensis | Yes | species | eukaryota | plants | species | 191701 | click here |
| ceratostigma willmottianum | Yes | species | | | species | 2054445 | click here |
| cercidiphyllum japonicum | Yes | species | eukaryota | plants | species | 13413 | click here |
| cercis chinensis | Yes | species | eukaryota | plants | species | 161750 | click here |
| cercis siliquastrum | Yes | species | eukaryota | plants | species | 49802 | click here |
| ceriops tagal | Yes | species | eukaryota | plants | species | 61143 | click here |
| chaenomeles speciosa | Yes | species | eukaryota | plants | species | 106546 | click here |
| chamaedorea seifrizii | Yes | species | eukaryota | plants | species | 77339 | click here |
| chenopodium | Yes | | | plants | genus | 3558 | click here |
| chenopodium album | Yes | species | eukaryota | plants | species | 3559 | click here |
| chenopodium quinoa | Yes | species | eukaryota | plants | species | 63459 | click here |
| chimaphila umbellata | Yes | species | eukaryota | plants | species | 93815 | click here |
| chinchilla | Yes | | | rodents | genus | 10151 | click here |
| chionanthus virginicus | Yes | species | eukaryota | plants | species | 126363 | click here |
| chloris gayana | Yes | species | eukaryota | plants | species | 110876 | click here |
| chlorophytum borivilianum | Yes | species | eukaryota | plants | species | 503355 | click here |
| chondrus crispus | Yes | species | eukaryota | plants | species | 2769 | click here |
| chrysanthemum | Yes | | | plants | genus | 13422 | click here |
| chrysanthemum sp. | Yes | no rank | eukaryota | plants | species | 137606 | click here |
| chrysanthemum x morifolium | Yes | subspecies | eukaryota | plants | species | 41568 | click here |
| cicer arietinum | Yes | species | eukaryota | plants | species | 3827 | click here |
| cichorium endivia | Yes | species | eukaryota | plants | species | 114280 | click here |
| cichorium intybus | Yes | species | eukaryota | plants | species | 13427 | click here |
| cineraria | Yes | | | plants | genus | 82361 | click here |
| cinnamomum aromaticum | Yes | species | eukaryota | plants | species | 119260 | click here |
| cirsium arvense | Yes | species | eukaryota | plants | species | 41550 | click here |
| cissus quadrangularis | Yes | species | eukaryota | plants | species | 165298 | click here |
| citrullus lanatus | Yes | species | eukaryota | plants | species | 3654 | click here |
| citrullus lanatus subsp. vulgaris | Yes | subspecies | eukaryota | plants | subspecies | 260674 | click here |
| citrus | Yes | | | plants | genus | 2706 | click here |
| citrus aurantiifolia | Yes | species | eukaryota | plants | species | 159033 | click here |
| citrus aurantium | Yes | species | eukaryota | plants | species | 43166 | click here |
| citrus clementina | Yes | species | eukaryota | plants | species | 85681 | click here |
| citrus jambhiri | Yes | species | eukaryota | plants | species | 64884 | click here |