Established
| Common name (English) | |
|---|---|
| Ipomoea purpurea | Common Morning Glory, Annual Morning Glory |
| Iris florentina | |
| Iris × germanica | |
| Isognomon bicolor | Bicolor Purse Oyster |
| Isognomon legumen | |
| Joculator problematicus | |
| Josephiella microcarpae | |
| Juglans regia | English walnut; Carpathian walnut |
| Karnyothrips flavipes | |
| Lagocephalus guentheri | Diamondback pufferfish, Half-smooth golden pufferfish |
| Lagocephalus sceleratus | Silver-cheeked toadfish, giant toadfish |
| Lagocephalus suezensis | Suez Puffer |
| Lamprohaminoea ovalis | |
| Lantanophaga pusillidactylus | Lantana plume moth |
| Lapsana communis subsp. communis | Nipplewort |
| Lathyrus sativus | Indian pea |
| Leonnates aylaoberi | |
| Lepidium didymum | Bitter Cress |
| Lepidosaphes beckii | Purple scale, Mussel scale, Citrus mussel scale, Orange scale, Comma scale, Mussel purple scale |
| Lepinotus reticulatus | Reticulate-winged trogiid, Reticulate-winged booklouse |