| glechoma hederacea | Yes | species | eukaryota | plants | species | 28509 | click here |
| gleditsia triacanthos | Yes | species | eukaryota | plants | species | 54874 | click here |
| glehnia littoralis | Yes | species | eukaryota | plants | species | 48119 | click here |
| glischrochilus fasciatus | Yes | species | | | species | 1720689 | click here |
| glischrochilus sanguinolentus | Yes | species | | | species | 1710401 | click here |
| globodera pallida | Yes | species | eukaryota | invertebrates | species | 36090 | click here |
| gloriosa superba | Yes | species | eukaryota | plants | species | 41220 | click here |
| glyceria maxima | Yes | species | eukaryota | plants | species | 388680 | click here |
| glycine max | Yes | species | eukaryota | plants | species | 3847 | click here |
| glycine soja | Yes | species | eukaryota | plants | species | 3848 | 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 |
| golovinomyces artemisiae | Yes | species | eukaryota | plants | species | 184029 | click here |
| golovinomyces asterum var. solidaginis | Yes | varietas | | | varietas | 1269808 | click here |
| golovinomyces cichoracearum | Yes | species | eukaryota | plants | species | 62708 | click here |
| golovinomyces sordidus | Yes | species | eukaryota | plants | species | 62717 | click here |
| gomesa warmingii | Yes | species | eukaryota | plants | species | 589425 | click here |
| gomphrena globosa | Yes | species | eukaryota | plants | species | 221775 | click here |
| gomphrena haageana | Yes | species | eukaryota | plants | species | 240061 | click here |
| goniorrhachis marginata | Yes | species | eukaryota | plants | species | 162783 | click here |
| gorilla | Yes | | | primates | genus | 9592 | click here |
| gossypium | Yes | | | plants | genus | 3633 | click here |
| gossypium barbadense | Yes | species | eukaryota | plants | species | 3634 | click here |
| gossypium hirsutum | Yes | species | eukaryota | plants | species | 3635 | click here |
| gracilaria sp. | Yes | no rank | eukaryota | plants | species | 33673 | click here |
| grevillea robusta | Yes | species | eukaryota | plants | species | 105748 | click here |
| grewia | Yes | | | plants | genus | 82407 | click here |
| grewia asiatica | Yes | species | | | species | 1384607 | click here |
| grubovia dasyphylla | Yes | species | eukaryota | plants | species | 240031 | click here |
| guazuma ulmifolia | Yes | species | eukaryota | plants | species | 93772 | click here |
| gymnocarpos przewalskii | Yes | species | eukaryota | plants | species | 157677 | click here |
| gynostemma pentaphyllum | Yes | species | eukaryota | plants | species | 182084 | click here |
| gynura bicolor | Yes | species | eukaryota | plants | species | 714476 | click here |
| gypsophila elegans | Yes | species | eukaryota | plants | species | 146095 | click here |
| gypsophila paniculata | Yes | species | eukaryota | plants | species | 235358 | click here |
| habenaria setacea | Yes | species | | | species | 589423 | click here |
| halerpestes salsuginosa | Yes | species | eukaryota | plants | species | 568523 | click here |
| halichoerus grypus grypus | Yes | subspecies | | | subspecies | 1908284 | click here |
| haliclona | Yes | | | invertebrates | genus | 6057 | click here |
| halimione portulacoides | Yes | species | eukaryota | plants | species | 376799 | click here |
| halimodendron halodendron | Yes | species | eukaryota | plants | species | 47657 | 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 |
| halopteris scoparia | Yes | species | eukaryota | plants | species | 91054 | click here |
| haloxylon ammodendron | Yes | species | eukaryota | plants | species | 151230 | click here |
| halyomorpha halys | Yes | species | eukaryota | invertebrates | species | 286706 | click here |
| handroanthus impetiginosus | Yes | species | eukaryota | plants | species | 429701 | click here |
| hebe | Yes | | | plants | species group | 71606 | click here |
| hedera helix | Yes | species | eukaryota | plants | species | 4052 | click here |
| hedysarum | Yes | | | plants | genus | 47034 | click here |
| helianthemum | Yes | | | plants | genus | 69453 | 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 sp. | Yes | no rank | eukaryota | plants | species | 50471 | click here |
| helianthus tuberosus | Yes | species | eukaryota | plants | species | 4233 | click here |
| helianthus verticillatus | Yes | species | eukaryota | plants | species | 140109 | click here |
| heliconia | Yes | | | plants | genus | 4653 | click here |
| heliconia chartacea | Yes | species | | | species | 999458 | click here |
| heliconia psittacorum | Yes | species | eukaryota | plants | species | 574477 | click here |
| hemarthria altissima | Yes | species | eukaryota | plants | species | 693373 | click here |
| hemerocallis fulva | Yes | species | eukaryota | plants | species | 34190 | click here |
| hennediella heimii | Yes | species | eukaryota | plants | species | 281618 | click here |
| heracleum | Yes | | | plants | genus | 40917 | click here |
| heracleum dissectum | Yes | species | eukaryota | plants | species | 380073 | click here |
| heracleum sosnowskyi | Yes | species | eukaryota | plants | species | 360622 | click here |
| heracleum sphondylium | Yes | species | eukaryota | plants | species | 40919 | click here |
| heracleum sphondylium subsp. sibiricum | Yes | species | eukaryota | plants | species | 414037 | click here |
| hesperocyparis arizonica | Yes | species | eukaryota | plants | species | 49011 | click here |
| heterodea muelleri | Yes | species | eukaryota | plants | species | 111705 | click here |
| heterodera schachtii | Yes | species | eukaryota | invertebrates | species | 97005 | click here |
| heterodermia | Yes | | | plants | genus | 114962 | click here |
| heteropanax fragrans | Yes | species | eukaryota | plants | species | 133943 | click here |
| heteropogon contortus | Yes | species | eukaryota | plants | species | 79849 | click here |
| heteropogon triticeus | Yes | species | | | species | 798321 | click here |
| hevea | Yes | | | plants | genus | 3980 | 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 |
| hibiscus syriacus | Yes | species | eukaryota | plants | species | 106335 | click here |
| hieronyma oblonga | Yes | species | eukaryota | plants | species | 300996 | click here |
| hilaria jamesii | Yes | species | eukaryota | plants | species | 110905 | click here |
| hippeastrum sp. | Yes | no rank | eukaryota | plants | species | 4696 | click here |
| hippocrepis emerus | Yes | species | eukaryota | plants | species | 72429 | click here |
| hippophae rhamnoides | Yes | species | eukaryota | plants | species | 193516 | click here |
| hoheria populnea | Yes | species | eukaryota | plants | species | 326352 | click here |
| holcoglossum flavescens | Yes | species | eukaryota | plants | species | 536148 | click here |
| holcoglossum lingulatum | Yes | species | eukaryota | plants | species | 536149 | click here |
| holcoglossum nujiangense | Yes | species | eukaryota | plants | species | 536150 | click here |
| holcoglossum weixiense | Yes | species | eukaryota | plants | species | 536163 | click here |
| holcus lanatus | Yes | species | eukaryota | plants | species | 29679 | click here |
| hololachna songarica | Yes | species | eukaryota | plants | species | 194564 | click here |
| holoptelea integrifolia | Yes | species | eukaryota | plants | species | 63066 | click here |