| ranunculus sceleratus | Yes | species | eukaryota | plants | species | 147635 | click here |
| raphanus sativus | Yes | species | eukaryota | plants | species | 3726 | click here |
| rauvolfia serpentina | Yes | species | eukaryota | plants | species | 4060 | click here |
| recilia dorsalis | Yes | species | | | species | 1582033 | click here |
| rehmannia glutinosa | Yes | species | eukaryota | plants | species | 99300 | click here |
| reptalus | Yes | | | invertebrates | genus | 472722 | click here |
| reptalus cuspidata | Yes | species | eukaryota | invertebrates | species | 472723 | click here |
| reptalus panzeri | Yes | species | eukaryota | invertebrates | species | 491283 | click here |
| reptalus quinquecostatus | Yes | species | eukaryota | invertebrates | species | 491284 | click here |
| reynoutria japonica | Yes | species | eukaryota | plants | species | 488216 | click here |
| rhamnus cathartica | Yes | species | eukaryota | plants | species | 3610 | click here |
| rhapidophyllum hystrix | Yes | species | eukaryota | plants | species | 115513 | click here |
| rhipicephalus microplus | Yes | species | eukaryota | invertebrates | species | 6941 | click here |
| rhododendron | Yes | | | plants | genus | 4346 | click here |
| rhus chinensis | Yes | species | eukaryota | plants | species | 289753 | click here |
| rhynchophorus ferrugineus | Yes | species | eukaryota | invertebrates | species | 354439 | click here |
| rhynchosia minima | Yes | species | eukaryota | plants | species | 132461 | click here |
| ribes | Yes | | | plants | genus | 3801 | click here |
| ribes nigrum | Yes | species | eukaryota | plants | species | 78511 | click here |
| ribes rubrum | Yes | species | eukaryota | plants | species | 175228 | click here |
| richardia scabra | Yes | species | eukaryota | plants | species | 60230 | click here |
| robinia pseudoacacia | Yes | species | eukaryota | plants | species | 35938 | click here |
| rosa | Yes | | | plants | genus | 3764 | click here |
| rosa canina | Yes | species | eukaryota | plants | species | 74635 | click here |
| rosa chinensis | Yes | species | eukaryota | plants | species | 74649 | click here |
| rosa multiflora | Yes | species | eukaryota | plants | species | 74647 | click here |
| rosa sp. | Yes | no rank | eukaryota | plants | species | 36598 | click here |
| rosa x alba | Yes | subspecies | eukaryota | plants | species | 267226 | click here |
| rosa x damascena | Yes | subspecies | eukaryota | plants | species | 3765 | click here |
| rosa xanthina | Yes | species | eukaryota | plants | species | 267264 | click here |
| roystonea borinquena | Yes | species | eukaryota | plants | species | 883806 | click here |
| roystonea regia | Yes | species | eukaryota | plants | species | 145709 | click here |
| rubia tinctorum | Yes | species | eukaryota | plants | species | 29802 | click here |
| rubus | Yes | | | plants | genus | 23216 | click here |
| rubus idaeus | Yes | species | eukaryota | plants | species | 32247 | click here |
| rubus occidentalis | Yes | species | eukaryota | plants | species | 75079 | click here |
| rubus plicatus | Yes | species | eukaryota | plants | species | 211815 | click here |
| rumex acetosa | Yes | species | eukaryota | plants | species | 41241 | click here |
| sabal mexicana | Yes | species | eukaryota | plants | species | 469730 | click here |
| sabal palmetto | Yes | species | eukaryota | plants | species | 54447 | click here |
| saccharosydne saccharivora | Yes | species | eukaryota | invertebrates | species | 984343 | click here |
| saccharum | Yes | | | plants | genus | 4546 | click here |
| saccharum arundinaceum | Yes | species | eukaryota | plants | species | 50346 | click here |
| saccharum hybrid cultivar | Yes | subspecies | eukaryota | plants | species | 128810 | click here |
| saccharum officinarum | Yes | species | eukaryota | plants | species | 4547 | click here |
| saccharum sp. | Yes | no rank | eukaryota | plants | species | 15819 | click here |
| salix alba | Yes | species | eukaryota | plants | species | 75704 | click here |
| salix babylonica | Yes | species | eukaryota | plants | species | 75706 | click here |
| salix sp. | Yes | no rank | eukaryota | plants | species | 65566 | click here |
| salvadora persica | Yes | species | eukaryota | plants | species | 4326 | click here |
| salvia miltiorrhiza | Yes | species | eukaryota | plants | species | 226208 | click here |
| salvia pratensis | Yes | species | eukaryota | plants | species | 49216 | click here |
| salvia sclarea | Yes | species | eukaryota | plants | species | 38869 | click here |
| santalum album | Yes | species | eukaryota | plants | species | 35974 | click here |
| saponaria | Yes | | | plants | genus | 3571 | click here |
| sasa borealis | Yes | species | eukaryota | plants | species | 591242 | click here |
| sauropus androgynus | Yes | species | eukaryota | plants | species | 283133 | click here |
| scaevola taccada | Yes | species | eukaryota | plants | species | 16481 | click here |
| scaphoideus titanus | Yes | species | eukaryota | invertebrates | species | 376741 | click here |
| schinus molle | Yes | species | eukaryota | plants | species | 43851 | click here |
| schlumbergera truncata | Yes | species | eukaryota | plants | species | 3595 | click here |
| sclerocarpus africanus | Yes | species | | | species | 1205777 | click here |
| scolymus maculatus | Yes | species | eukaryota | plants | species | 268090 | click here |
| scoparia dulcis | Yes | species | eukaryota | plants | species | 107240 | click here |
| scorzonera hispanica | Yes | species | eukaryota | plants | species | 114289 | click here |
| scylla serrata | Yes | species | eukaryota | invertebrates | species | 6761 | click here |
| sechium edule | Yes | species | eukaryota | plants | species | 184140 | click here |
| sempervivum tectorum | Yes | species | eukaryota | plants | species | 91155 | click here |
| senecio vulgaris | Yes | species | eukaryota | plants | species | 76276 | click here |
| senna italica | Yes | species | eukaryota | plants | species | 346974 | click here |
| senna surattensis | Yes | species | eukaryota | plants | species | 499995 | click here |
| sesamum | Yes | | | plants | genus | 4181 | click here |
| sesamum indicum | Yes | species | eukaryota | plants | species | 4182 | click here |
| setaria adhaerens | Yes | species | eukaryota | plants | species | 560831 | click here |
| setaria verticillata | Yes | species | eukaryota | plants | species | 149379 | click here |
| setaria viridis | Yes | species | eukaryota | plants | species | 4556 | click here |
| sida rhombifolia | Yes | species | eukaryota | plants | species | 108377 | click here |
| silene vulgaris | Yes | species | eukaryota | plants | species | 42043 | click here |
| simmondsia chinensis | Yes | species | eukaryota | plants | species | 3999 | click here |
| sinapis arvensis | Yes | species | eukaryota | plants | species | 29728 | click here |
| sisymbrium officinale | Yes | species | eukaryota | plants | species | 203582 | click here |
| smilax aspera | Yes | species | eukaryota | plants | species | 59116 | click here |
| sogatella kolophon | Yes | species | | | species | 1490262 | click here |
| solanum | Yes | | | plants | genus | 4107 | click here |
| solanum dulcamara | Yes | species | eukaryota | plants | species | 45834 | click here |
| solanum glaucophyllum | Yes | species | eukaryota | plants | species | 52877 | click here |
| solanum laxum | Yes | species | eukaryota | plants | species | 205558 | click here |
| solanum lycopersicum | Yes | species | eukaryota | plants | species | 4081 | click here |
| solanum marginatum | Yes | species | eukaryota | plants | species | 329785 | click here |
| solanum melongena | Yes | species | eukaryota | plants | species | 4111 | click here |
| solanum nigrum | Yes | species | eukaryota | plants | species | 4112 | click here |
| solanum phureja | Yes | species | eukaryota | plants | species | 172790 | click here |
| solanum quitoense | Yes | species | eukaryota | plants | species | 227725 | click here |
| solanum tuberosum | Yes | species | eukaryota | plants | species | 4113 | click here |
| solanum violaceum | Yes | species | eukaryota | plants | species | 329803 | click here |
| solenostemon scutellarioides | Yes | species | eukaryota | plants | species | 4142 | click here |
| sonchus oleraceus | Yes | species | eukaryota | plants | species | 50207 | click here |
| sophora | Yes | | | plants | genus | 3896 | click here |
| sophora alopecuroides | Yes | species | eukaryota | plants | species | 200492 | click here |
| sophora japonica | Yes | species | eukaryota | plants | species | 3897 | click here |