| Subject | English | Latin |
| nat.res. | dark scarlet star | Guzmania lingulata |
| biol. | great scarlet poppy | Papaver bracteat Lindl. |
| biol. | large scarlet-flowered catch-fly | Silene rotundifolia |
| biol. | old scarlet strawberry | Fragaria virginiana Mill |
| environ., nat.res. | scarlet ammannia | Ammannia robusta |
| ornit. | scarlet-and-green parrot | Alisterus scapularis |
| ornit. | scarlet-and-white tanager | Chrysothlypis salmoni |
| ichtyol. | scarlet angler | Antennarius nummifer |
| biol. | scarlet aphelandra | Aphelandra tetragona Nees. |
| ornit. | scarlet-backed flowerpecker | Dicaeum cruentatum |
| ornit. | scarlet-backed woodpecker | Veniliornis callonotus |
| ichtyol. | scarlet-banded rainbowfish | Stethojulis albovittata |
| food.ind. | scarlet beebalm | Monarda didyma |
| biol. | scarlet begonia | Begonia coccinea Hook. |
| ornit. | scarlet-bellied mountain tanager | Anisognathus igniventris |
| zool. | scarlet-bellied mountain-tanager | Anisognathus igniventris, Anisognathus igniventris igniventris |
| zool. | scarlet-bibbed myzomela | Myzomela sclateri |
| biol. | scarlet blood lily | Haemanthus coccineus L. |
| biol. | scarlet blood lily | Haemanthus multiflorus Martyn. |
| biol. | scarlet blood lily | Haemanthus L. |
| ornit. | scarlet-breasted dacnis | Dacnis berlepschi |
| ornit. | scarlet-breasted flowerpecker | Prionochilus thoracicus |
| ornit. | scarlet-breasted fruit dove | Ptilinopus formosus |
| ornit. | scarlet-breasted fruit dove | Megaloprepia formosa |
| zool. | scarlet-breasted fruit-dove | Ptilinopus bernsteinii |
| ornit. | scarlet-breasted fruit-eater | Pipreola frontalis |
| zool. | scarlet-breasted fruiteater | Pipreola frontalis, Pipreola frontalis frontalis |
| ornit. | scarlet-breasted parrot | Polytelis swainsonii |
| ornit. | scarlet-breasted parrot | Neophema splendida |
| ornit. | scarlet-breasted sunbird | Nectarinia senegalensis |
| ornit. | scarlet-browed tanager | Heterospingus xanthopygius |
| ornit. | scarlet-browed tanager | Heterospingus |
| biol. | scarlet bush | Hamelia patens Jacq. |
| biol. | scarlet bush | Hamelia Jacq. |
| biol. | scarlet-cacalia | Emilia flammea Cass. |
| biol. | scarlet-cacalia | Emilia Cass. |
| ichtyol. | scarlet carp | Sarcochilichthys sinensis |
| ornit. | scarlet-chested grass parrakeet | Neophema splendida |
| ornit. | scarlet-chested parrot | Neophema splendida |
| ornit. | scarlet-chested sunbird | Nectarinia senegalensis |
| nat.sc. | scarlet-chested sunbird | nectarinia senegalensis |
| biol. | scarlet clematis | Clematis texensis Buckl. |
| biol. | scarlet clover | Trifolium incarnatum |
| nat.res. | scarlet cock-of-the-rock | Rupicola peruviana |
| zool. | scarlet-collared flowerpecker | Dicaeum retrocinctum |
| biol. | scarlet columnea | Columnea gloriosa sp. |
| ornit. | scarlet-crowned barbet | Capito aurovirens |
| biol. | scarlet detura | Datura sanguinea Ruiz et Pav. |
| biol. | scarlet-eggplant | Solanum integrifolium Poir. |
| biol. | scarlet elder | Sambucus pubens Michx. |
| biol. | scarlet elf cup | Plectania coccinea Scop. ex Fr. Fuck. |
| biol. | scarlet eucalyptus | Eucalyptus ficifolia F. Muell. |
| med. | scarlet fever | febris scarlatina |
| med. | scarlet fever | scarlatina |
| ornit. | scarlet finch | Haematospiza sipahi |
| ornit. | scarlet finch | Haematospiza |
| biol. | scarlet flowered gum | Eucalyptus ficifolia F. Muell. |
| biol. | scarlet flycap | Amanita musearia L. Fr. Pers. ex Hook. |
| biol. | scarlet fritilary | Fritillaria recurva Benth. |
| zool. | scarlet-fronted parakeet | Aratinga wagleri, Aratinga wagleri wagleri |
| ornit. | scarlet-fronted parrakeet | Aratinga wagleri |
| ornit. | scarlet-fronted parrakeet | Psittacara wagleri |
| biol. | scarlet fuchsia | Fuchsia coccinea Soland. |
| food.ind. | scarlet gamba prawn | Plesiopenaeus edwardsianus |
| biol. | scarlet globe-mallow | Sphaeralcea caccina Rydb. |
| nat.res. | scarlet goldfish vine | Columnea gloriosa |
| food.ind. | scarlet gourd | Coccinea grandis |
| ornit. | scarlet grosbeak | Carpodacus erythrinus |
| ornit. | scarlet-headed blackbird | Amblyramphus holosericeus |
| ornit. | scarlet-headed blackbird | Amblyramphus |
| ornit. | scarlet-headed flowerpecker | Dicaeum trochileum |
| ornit. | scarlet-headed oriole | Icterus pustulatus |
| zool. | scarlet-headed oriole | Icterus pustulatus pustulatus |
| ornit. | scarlet honeyeater | Myzomela sanguinolenta |
| ornit. | scarlet-hooded barbet | Eubucco tucinkae |
| ornit. | scarlet-horned manakin | Pipra cornuta |
| ornit. | scarlet ibis | Eudocimus ruber |
| biol. | scarlet kadsura | Kadsura japonica Dunal |
| biol. | scarlet kafir-lily | Clivia miniata Regel |
| biol. | scarlet kafir-lily | Clivia Lindl. |
| food.ind. | scarlet king crab | Lithodes couesi |
| reptil. | scarlet king snake | Lampropeltis doliata |
| biol. | scarlet larkspur | Delphinium cardinale Hook. |
| entomol. | scarlet leafhopper | Empoasca coccinea |
| biol. | scarlet lightning | Lychnis chalcedonica L. |
| nat.res., agric. | scarlet lime | Citrus mitis |
| ichtyol. | scarlet lobsterette | Nephropsis atlantica |
| ichtyol. | scarlet longbeak shrimp | Plesionika beebei |
| biol. | scarlet lychnis | Lychnis chalcedonica L. |
| ornit. | scarlet macaw | Ara macao |
| environ., nat.res. | Scarlet macaw | Ara macao |
| nat.sc., agric. | scarlet maple | Acer rubrum |
| biol. | scarlet maple | Acerrubrum L. |
| ornit. | scarlet minivet | Pericrocotus flammeus |
| zool. | scarlet minivet | Pericrocotus flammeus, Pericrocotus flammeus speciosus |
| nat.sc., agric. | scarlet mite | Brevipalpus obovatus |
| nat.sc., agric. | scarlet mite | Tenuipalpus obovatus |
| nat.sc., agric. | scarlet mite | Tenuipalpus inormatus |
| biol. | scarlet mite | Brevipalpus obovatus Donnadieu |
| food.ind. | scarlet monarda | Monarda didyma |
| ornit. | scarlet myzomela | Myzomela sanguinolenta |
| ornit. | scarlet-naped myzomela | Myzomela lafargei |
| biol. | scarlet oak | Quercus coccinea Muench. |
| biol. | scarlet oak | Quercus borealis maxima Sarg. |
| nat.sc., agric. | scarlet pimpernel | Anagallis arvensis |
| bot. | scarlet pimpernel | Anagallis phoenicea Scop. |
| environ., nat.res. | scarlet pimpernel | Anagallis arvensis Lin. |
| bot. | scarlet pimpernel | Anagallis arvensis L. |
| biol. | scarlet plumbago | Plumbago indica L. |
| biol. | scarlet plume | Euphorbia fulgens Karw. |
| biol. | scarlet renanthera | Renanthera coccinea Lour. |
| biol. | scarlet renanthera | Renanthera Lour. |
| ornit. | scarlet robin | Petroica multicolor |
| ornit. | scarlet robin-flycatcher | Petroica multicolor |
| zool. | scarlet rosefinch | Carpodacus erythrinus |
| biol. | scarlet rose-mallow | Hibiscus coccineus Medicus Walt. |
| ornit. | scarlet-rumped cacique | Cacicus uropygialis |
| zool. | scarlet-rumped cacique | Cacicus uropygialis, Cacicus uropygialis microrhynchus |
| ornit. | scarlet-rumped tanager | Ramphocelus passerinii |
| ornit. | scarlet-rumped trogon | Harpactes duvaucelii |
| agric. | scarlet runner | Phaseolus multiflorus |
| agric. | scarlet runner | Phaseolus coccineus |
| biol. | scarlet runner | Phaseolus multiflorus Willd. |
| agric. | scarlet runner bean | Phaseolus multiflorus |
| agric. | scarlet runner bean | Phaseolus coccineus |
| biol. | scarlet runner bean | Phaseolus multiflorus Willd. |
| biol. | scarlet runner bean | Phaseolus coccineus L. |
| biol. | scarlet sage | Salvia colorans hort. |
| biol. | scarlet sage | Salvia splendens Ker-Gawl. |
| ornit. | scarlet-shouldered parrotlet | Touit huetii |
| nat.res., fish.farm. | scarlet shrimp | Plesiopenaeus edwarsianus |
| ichtyol. | scarlet shrimp | Acanthephyra purpurea |
| life.sc., fish.farm. | scarlet shrimp | Aristaeopsis edwardsiana |
| nat.sc., agric. | scarlet shrimp | Plesiopenaeus edwardsianus |
| reptil. | scarlet snake | Cemophora coccinea |
| reptil. | scarlet snakes | Cemophora |
| ichtyol. | scarlet soldier | Myripristis pralinius |
| ornit. | scarlet-spectacled wattle-eye | Platysteira cyanea |
| ichtyol. | scarlet-spotted velvet fish | Caracanthus maculatus |
| nat.res. | scarlet star | Guzmania minor |
| biol. | scarlet star-glory | Quamoclit coccinea Moench |
| bot. | scarlet strawberry | Fragaria virginiana |
| ornit. | scarlet sunbird | Aethopyga mystacalis |
| zool. | scarlet sunbird | Aethopyga mystacalis, Aethopyga mystacalis tenuirostris |
| ornit. | scarlet tanager | Piranga olivacea |
| ornit. | scarlet-thighed dacnis | Dacnis venusta |
| ornit. | scarlet-throated tanager | Compsothraupis loricata |
| ornit. | scarlet-throated tanager | Compsothraupis |
| entomol. | scarlet tiger moth | Callimorpha dominula |
| biol. | scarlet tofieldia | Tofieldia coccinea Richards |
| ornit. | scarlet-tufted malachite sunbird | Nectarinia johannae |
| ornit. | scarlet-tufted sunbird | Anthreptes fraseri |
