| cotinus coggygria | Yes | species | eukaryota | plants | species | 269719 | click here |
| cotoneaster | Yes | | | plants | genus | 36607 | click here |
| cotoneaster melanocarpus | Yes | species | eukaryota | plants | species | 690322 | click here |
| couroupita guianensis | Yes | species | eukaryota | plants | species | 66684 | click here |
| coussarea | Yes | | | plants | genus | 60043 | click here |
| crataegus | Yes | | | plants | genus | 23159 | click here |
| crataegus azarolus | Yes | species | eukaryota | plants | species | 298644 | click here |
| crataegus monogyna | Yes | species | eukaryota | plants | species | 140997 | click here |
| crataegus pentagyna | Yes | species | eukaryota | plants | species | 416291 | click here |
| crataegus pinnatifida | Yes | species | eukaryota | plants | species | 510735 | click here |
| crataegus pseudoheterophylla | Yes | species | eukaryota | plants | species | 510736 | click here |
| crataegus rhipidophylla | Yes | species | eukaryota | plants | species | 510738 | click here |
| crescentia portoricensis | Yes | species | eukaryota | plants | species | 83939 | click here |
| crotalaria spectabilis | Yes | species | eukaryota | plants | species | 517187 | click here |
| croton abutiloides | Yes | species | eukaryota | plants | species | 323023 | click here |
| croton alnifolius | Yes | species | | | species | 1421025 | click here |
| croton billbergianus | Yes | species | eukaryota | plants | species | 425915 | click here |
| croton schiedeanus | Yes | species | eukaryota | plants | species | 323080 | click here |
| croton sublyratus | Yes | species | eukaryota | plants | species | 107238 | click here |
| cucumis | Yes | | | plants | genus | 3655 | click here |
| cucumis melo | Yes | species | eukaryota | plants | species | 3656 | click here |
| cucumis melo subsp. melo | Yes | subspecies | eukaryota | plants | subspecies | 412675 | click here |
| cucumis melo var. cantalupo | Yes | varietas | eukaryota | plants | varietas | 3658 | click here |
| cucumis sativus | Yes | species | eukaryota | plants | species | 3659 | click here |
| cunninghamia lanceolata | Yes | species | eukaryota | plants | species | 28977 | click here |
| cupania rufescens | Yes | species | eukaryota | plants | species | 681429 | click here |
| cupressus sempervirens | Yes | species | eukaryota | plants | species | 13469 | click here |
| curcuma kwangsiensis | Yes | species | eukaryota | plants | species | 136216 | click here |
| curcuma longa | Yes | species | eukaryota | plants | species | 136217 | click here |
| cuscuta monogyna | Yes | species | eukaryota | plants | species | 184474 | click here |
| cyanthillium cinereum | Yes | species | eukaryota | plants | species | 211151 | click here |
| cyathea contaminans | Yes | species | eukaryota | plants | species | 204587 | click here |
| cyathea lepifera | Yes | species | eukaryota | plants | species | 29636 | click here |
| cyathula prostrata | Yes | species | eukaryota | plants | species | 221766 | click here |
| cycas debaoensis | Yes | species | eukaryota | plants | species | 470941 | click here |
| cycas fairylakea | Yes | species | eukaryota | plants | species | 171011 | click here |
| cyclocarya paliurus | Yes | species | eukaryota | plants | species | 117167 | click here |
| cyclopeltis semicordata | Yes | species | eukaryota | plants | species | 449831 | click here |
| cyclopia genistoides | Yes | species | eukaryota | plants | species | 70073 | click here |
| cyclopia longifolia | Yes | species | eukaryota | plants | species | 337836 | click here |
| cyclopia subternata | Yes | species | eukaryota | plants | species | 155109 | click here |
| cydonia oblonga | Yes | species | eukaryota | plants | species | 36610 | click here |
| cymbidium kanran | Yes | species | eukaryota | plants | species | 112611 | click here |
| cynodon dactylon | Yes | species | eukaryota | plants | species | 28909 | click here |
| cyperus esculentus | Yes | species | | | species | 1053340 | click here |
| cypripedium | Yes | | | plants | genus | 38190 | click here |
| cytisophyllum sessilifolium | Yes | species | eukaryota | plants | species | 3834 | click here |
| cytisus | Yes | | | plants | genus | 3833 | click here |
| cytisus arboreus subsp. baeticus | Yes | subspecies | eukaryota | plants | subspecies | 176349 | click here |
| cytisus scoparius | Yes | species | eukaryota | plants | species | 3835 | click here |
| cytisus striatus | Yes | species | eukaryota | plants | species | 176342 | click here |
| dactylis glomerata | Yes | species | eukaryota | plants | species | 4509 | click here |
| dalbergia odorifera | Yes | species | eukaryota | plants | species | 499988 | click here |
| dalbergia retusa | Yes | species | | | species | 466221 | click here |
| dalea candida | Yes | species | eukaryota | plants | species | 252452 | click here |
| dalea purpurea | Yes | species | eukaryota | plants | species | 248511 | click here |
| daphne laureola | Yes | species | eukaryota | plants | species | 223749 | click here |
| datura inoxia | Yes | species | eukaryota | plants | species | 4075 | click here |
| datura metel | Yes | species | eukaryota | plants | species | 35625 | click here |
| datura stramonium | Yes | species | eukaryota | plants | species | 4076 | click here |
| daucus carota | Yes | species | eukaryota | plants | species | 4039 | click here |
| dendrobium catenatum | Yes | species | eukaryota | plants | species | 142615 | click here |
| dendrobium chrysanthum | Yes | species | eukaryota | plants | species | 154291 | click here |
| dendrobium heterocarpum | Yes | species | eukaryota | plants | species | 257361 | click here |
| dendrobium hookerianum | Yes | species | eukaryota | plants | species | 906780 | click here |
| dendrobium sinense | Yes | species | | | species | 1131870 | click here |
| dendropanax arboreus | Yes | species | eukaryota | plants | species | 46395 | click here |
| desbordesia glaucescens | Yes | species | eukaryota | plants | species | 300981 | click here |
| desmanthus illinoensis | Yes | species | eukaryota | plants | species | 196648 | click here |
| diaporthe amygdali | Yes | species | eukaryota | plants | species | 1214568 | click here |
| dichotomaria marginata | Yes | species | eukaryota | plants | species | 268567 | click here |
| dichroa febrifuga | Yes | species | eukaryota | plants | species | 152286 | click here |
| dillenia indica | Yes | species | eukaryota | plants | species | 4378 | click here |
| dimocarpus longan | Yes | species | eukaryota | plants | species | 128017 | click here |
| dioscorea | Yes | | | plants | genus | 4672 | click here |
| dioscorea communis | Yes | species | eukaryota | plants | species | 55634 | click here |
| diospyros | Yes | | | plants | genus | 13492 | click here |
| diospyros kaki | Yes | species | eukaryota | plants | species | 35925 | click here |
| diospyros lotus | Yes | species | eukaryota | plants | species | 55363 | click here |
| dipsacus fullonum | Yes | species | eukaryota | plants | species | 183561 | click here |
| dipsacus laciniatus | Yes | species | eukaryota | plants | species | 398307 | click here |
| dipterocarpus | Yes | | | plants | genus | 64585 | click here |
| dipterocarpus costulatus | Yes | species | | | species | 1094869 | click here |
| dipterocarpus elongatus | Yes | species | | | species | 1094871 | click here |
| dipterocarpus fagineus | Yes | species | | | species | 1094872 | click here |
| dipterocarpus hasseltii | Yes | species | | | species | 1094874 | click here |
| dipterocarpus kerrii | Yes | species | eukaryota | plants | species | 64586 | click here |
| dissotis | Yes | | | plants | genus | 39999 | click here |
| dodonaea | Yes | | | plants | genus | 43718 | click here |
| dorycnium hirsutum | Yes | species | eukaryota | plants | species | 118898 | click here |
| drosophila sp. | Yes | no rank | eukaryota | invertebrates | species | 7242 | click here |
| dryocosmus kuriphilus | Yes | species | eukaryota | invertebrates | species | 310278 | click here |
| durio zibethinus | Yes | species | eukaryota | plants | species | 66656 | click here |
| dysosma difformis | Yes | species | eukaryota | plants | species | 335806 | click here |
| dysosma versipellis | Yes | species | eukaryota | plants | species | 93611 | click here |
| dysoxylum gotadhora | Yes | species | | | species | 1679391 | click here |
| echinacea purpurea | Yes | species | eukaryota | plants | species | 53751 | click here |
| eclipta prostrata | Yes | species | eukaryota | plants | species | 53719 | click here |
| eichhornia azurea | Yes | species | eukaryota | plants | species | 44946 | click here |
| elaeagnus | Yes | | | plants | genus | 36776 | click here |