| geodorum densiflorum | Yes | species | eukaryota | plants | species | 160521 | click here |
| ginkgo biloba | Yes | species | eukaryota | plants | species | 3311 | click here |
| giraffa camelopardalis | Yes | species | eukaryota | mammals | species | 9894 | click here |
| gladiolus | Yes | | | plants | genus | 49747 | click here |
| gladiolus grandiflorus | Yes | species | eukaryota | plants | species | 378406 | click here |
| glebionis coronaria | Yes | species | eukaryota | plants | species | 99038 | click here |
| gloriosa superba | Yes | species | eukaryota | plants | species | 41220 | click here |
| glycine max | Yes | species | eukaryota | plants | species | 3847 | click here |
| glycyrrhiza glabra | Yes | species | eukaryota | plants | species | 49827 | click here |
| glycyrrhiza uralensis | Yes | species | eukaryota | plants | species | 74613 | click here |
| gmelina arborea | Yes | species | eukaryota | plants | species | 201509 | click here |
| goniorrhachis marginata | Yes | species | eukaryota | plants | species | 162783 | click here |
| gorgonia ventalina | Yes | species | eukaryota | invertebrates | species | 204384 | click here |
| gossypium | Yes | | | plants | genus | 3633 | click here |
| gossypium hirsutum | Yes | species | eukaryota | plants | species | 3635 | click here |
| gracilaria edulis | Yes | species | eukaryota | plants | species | 172966 | click here |
| gracilaria foliifera | Yes | species | eukaryota | plants | species | 191042 | click here |
| gracilaria sp. | Yes | no rank | eukaryota | plants | species | 33673 | click here |
| gracillaria | Yes | | | invertebrates | genus | 753335 | click here |
| grantia compressa | Yes | species | eukaryota | invertebrates | species | 196260 | click here |
| grateloupia | Yes | | | plants | genus | 31454 | click here |
| grevillea robusta | Yes | species | eukaryota | plants | species | 105748 | click here |
| grewia asiatica | Yes | species | | | species | 1384607 | click here |
| grewia hirsuta | Yes | species | | | species | 1357588 | click here |
| grifola frondosa | Yes | species | eukaryota | plants | species | 5627 | click here |
| grobya cipoensis | Yes | species | | | species | 1775392 | click here |
| grubovia dasyphylla | Yes | species | eukaryota | plants | species | 240031 | click here |
| grus japonensis | Yes | species | eukaryota | vertebrates | species | 30415 | click here |
| gymnaconitum gymnandrum | Yes | species | eukaryota | plants | species | 215071 | click here |
| gymnema sylvestre | Yes | species | eukaryota | plants | species | 4068 | click here |
| gyrinops walla | Yes | species | eukaryota | plants | species | 223760 | click here |
| habrobracon hebetor | Yes | species | eukaryota | invertebrates | species | 69819 | click here |
| haemorhous mexicanus | Yes | species | eukaryota | vertebrates | species | 30427 | click here |
| halichoerus grypus grypus | Yes | subspecies | | | subspecies | 1908284 | click here |
| halichondria | Yes | | | invertebrates | genus | 6061 | click here |
| halichondria japonica | Yes | species | eukaryota | invertebrates | species | 6062 | click here |
| haliclona | Yes | | | invertebrates | genus | 6057 | click here |
| haliclona simulans | Yes | species | | | species | 492524 | click here |
| halimeda gracilis | Yes | species | eukaryota | plants | species | 170416 | click here |
| halocnemum | Yes | | | plants | genus | 239184 | click here |
| halocnemum strobilaceum | Yes | species | eukaryota | plants | species | 239185 | click here |
| halodule pinifolia | Yes | species | eukaryota | plants | species | 55315 | click here |
| halophila ovalis | Yes | species | eukaryota | plants | species | 62339 | click here |
| halophila ovata | Yes | species | | | species | 1150872 | click here |
| halopteris scoparia | Yes | species | eukaryota | plants | species | 91054 | click here |
| haloxylon | Yes | | | plants | genus | 151229 | click here |
| heisteria concinna | Yes | species | eukaryota | plants | species | 50126 | click here |
| helianthemum ledifolium | Yes | species | eukaryota | plants | species | 632758 | click here |
| helianthus | Yes | | | plants | genus | 4231 | click here |
| helianthus annuus | Yes | species | eukaryota | plants | species | 4232 | click here |
| helianthus tuberosus | Yes | species | eukaryota | plants | species | 4233 | click here |
| helicoverpa armigera | Yes | species | eukaryota | invertebrates | species | 29058 | click here |
| heliocidaris crassispina | Yes | species | | | species | 1043166 | click here |
| hennediella heimii | Yes | species | eukaryota | plants | species | 281618 | click here |
| heritiera littoralis | Yes | species | eukaryota | plants | species | 93780 | click here |
| heterodera avenae | Yes | species | eukaryota | invertebrates | species | 34510 | click here |
| heterodera glycines | Yes | species | eukaryota | invertebrates | species | 51029 | click here |
| heterodera schachtii | Yes | species | eukaryota | invertebrates | species | 97005 | click here |
| heteropogon contortus | Yes | species | eukaryota | plants | species | 79849 | click here |
| hevea brasiliensis | Yes | species | eukaryota | plants | species | 3981 | click here |
| hevea guianensis | Yes | species | | | species | 882917 | click here |
| hevea nitida | Yes | species | | | species | 1318716 | click here |
| hevea pauciflora | Yes | species | | | species | 1318717 | click here |
| hexapoda | Yes | | | invertebrates | superclass | 6960 | click here |
| hibiscus cannabinus | Yes | species | eukaryota | plants | species | 229543 | click here |
| hibiscus rosa-sinensis | Yes | no rank | eukaryota | plants | species | 183298 | click here |
| hibiscus sabdariffa | Yes | species | eukaryota | plants | species | 183260 | click here |
| hilaria jamesii | Yes | species | eukaryota | plants | species | 110905 | click here |
| himatanthus | Yes | | | plants | genus | 141568 | click here |
| hololachna songarica | Yes | species | eukaryota | plants | species | 194564 | click here |
| holoptelea integrifolia | Yes | species | eukaryota | plants | species | 63066 | click here |
| holothuria scabra | Yes | species | eukaryota | invertebrates | species | 269548 | click here |
| holothuroidea | Yes | | | invertebrates | class | 7705 | click here |
| homo | Yes | | | primates | genus | 9605 | click here |
| homo sapiens | Yes | species | eukaryota | primates | species | 9606 | click here |
| hoplitis leucomelana | Yes | species | eukaryota | invertebrates | species | 549074 | click here |
| hordeum murinum subsp. murinum | Yes | subspecies | eukaryota | plants | subspecies | 98111 | click here |
| hordeum vulgare | Yes | species | eukaryota | plants | species | 4513 | click here |
| houttuynia cordata | Yes | species | eukaryota | plants | species | 16752 | click here |
| howea forsteriana | Yes | species | eukaryota | plants | species | 292773 | click here |
| humulus | Yes | | | plants | genus | 3484 | click here |
| humulus lupulus | Yes | species | eukaryota | plants | species | 3486 | click here |
| huperzia crispata | Yes | species | eukaryota | plants | species | 380486 | click here |
| huperzia selago | Yes | species | eukaryota | plants | species | 70001 | click here |
| huperzia serrata | Yes | species | eukaryota | plants | species | 355589 | click here |
| hydnophytum formicarum | Yes | species | eukaryota | plants | species | 29797 | click here |
| hydractinia echinata | Yes | species | eukaryota | invertebrates | species | 35630 | click here |
| hylaeus moricei | Yes | species | | | species | 1542586 | click here |
| hylastes ater | Yes | species | | | species | 512079 | click here |
| hylobius abietis | Yes | species | eukaryota | invertebrates | species | 201999 | click here |
| hylocereus | Yes | | | plants | genus | 154422 | click here |
| hylurgus ligniperda | Yes | species | eukaryota | invertebrates | species | 167147 | click here |
| hymeniacidon heliophila | Yes | species | eukaryota | invertebrates | species | 51076 | click here |
| hymeniacidon perlevis | Yes | species | eukaryota | invertebrates | species | 177573 | click here |
| hyoscyamus muticus | Yes | species | eukaryota | plants | species | 35626 | click here |
| hypericum perforatum | Yes | species | eukaryota | plants | species | 65561 | click here |
| hypericum tomentosum | Yes | species | | | species | 1137039 | click here |
| hypnea sp. | Yes | no rank | eukaryota | plants | species | 196372 | click here |
| hyptis suaveolens | Yes | species | eukaryota | plants | species | 204129 | click here |
| ilex paraguariensis | Yes | species | eukaryota | plants | species | 185542 | click here |