| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| LOGA3 | Lobelia gattingeri Gray | Lobelia appendiculata var. gattingeri | Campanulaceae
|
| LOGAG2 | Lobelia gaudichaudii A. DC. ssp. gaudichaudii | Koolau Range lobelia | Campanulaceae
|
| LOGAK3 | Lobelia gaudichaudii A. DC. ssp. koolauensis (Hosaka & Fosberg) Lammers | Koolau Range lobelia | Campanulaceae
|
| LOGAG | Lobelia gaudichaudii A. DC. var. gloria-montis (Rock) St. John & Hosaka | Lobelia gloria-montis | Campanulaceae
|
| LOGAK | Lobelia gaudichaudii A. DC. var. kauaensis Gray | Lobelia kauaensis | Campanulaceae
|
| LOGAK2 | Lobelia gaudichaudii A. DC. var. koolauensis Hosaka & Fosberg | Lobelia gaudichaudii ssp. koolauensis | Campanulaceae
|
| LOGAL | Lobelia gaudichaudii A. DC. var. longibracteata Rock | Lobelia gloria-montis | Campanulaceae
|
| LOGA | Lobelia gaudichaudii A. DC. | Koolau Range lobelia | Campanulaceae
|
| LOGE3 | Lobelia georgiana McVaugh | Lobelia amoena var. glandulifera | Campanulaceae
|
| LOGL5 | Lobelia glandulifera (Gray) Small | Lobelia amoena var. glandulifera | Campanulaceae
|
| LOGL | Lobelia glandulosa Walt. | glade lobelia | Campanulaceae
|
| LOGLM | Lobelia gloria-montis Rock var. molokaiensis O. Deg. | Lobelia gloria-montis | Campanulaceae
|
| LOGL4 | Lobelia gloria-montis Rock | bog lobelia | Campanulaceae
|
| LOGR5 | Lobelia grayana F. Wimmer | Haleakala lobelia | Campanulaceae
|
| LOHA4 | Lobelia halei Small | Lobelia flaccidifolia | Campanulaceae
|
| LOHIM | Lobelia hillebrandii Rock var. monostachya Rock | Lobelia monostachya | Campanulaceae
|
| LOHIP | Lobelia hillebrandii Rock var. paniculata Rock | Lobelia dunbarii ssp. paniculata | Campanulaceae
|
| LOHI4 | Lobelia hillebrandii Rock | Maui lobelia | Campanulaceae
|
| LOHI5 | Lobelia hirtella (Gray) Greene | Lobelia spicata var. hirtella | Campanulaceae
|
| LOHO2 | Lobelia homophylla F. Wimmer | pineland lobelia | Campanulaceae
|
| LOHYH | Lobelia hypoleuca Hbd. var. heterocarpa F. Wimmer | Lobelia hypoleuca | Campanulaceae
|
| LOHYR | Lobelia hypoleuca Hbd. var. rockii St. John & Hosaka | Lobelia hypoleuca | Campanulaceae
|
| LOHY | Lobelia hypoleuca Hbd. | kuhi'aikamo'owahie | Campanulaceae
|
| LOIN | Lobelia inflata L. | Indian-tobacco | Campanulaceae
|
| LOKAS | Lobelia kalmii L. var. strictiflora Rydb. | Lobelia kalmii | Campanulaceae
|
| LOKA | Lobelia kalmii L. | Ontario lobelia | Campanulaceae
|
| LOKA2 | Lobelia kauaensis (Gray) Heller | lava lobelia | Campanulaceae
|
| LOLAA | Lobelia laxiflora Kunth var. angustifolia A. DC. | Sierra Madre lobelia | Campanulaceae
|
| LOLA | Lobelia laxiflora Kunth | Sierra Madre lobelia | Campanulaceae
|
| LOLE3 | Lobelia leptostachys A. DC. | Lobelia spicata var. leptostachys | Campanulaceae
|
| LOMO3 | Lobelia monostachya (Rock) Lammers | Waianae Range lobelia | Campanulaceae
|
| LONIF | Lobelia niihauensis St. John var. forbesii St. John | Lobelia niihauensis | Campanulaceae
|
| LONIM | Lobelia niihauensis St. John var. meridiana St. John | Lobelia niihauensis | Campanulaceae
|
| LONI | Lobelia niihauensis St. John | Niihau lobelia | Campanulaceae
|
| LONU | Lobelia nuttallii J.A. Schultes | Nuttall's lobelia | Campanulaceae
|
| LOOA | Lobelia oahuensis Rock | Oahu lobelia | Campanulaceae
|
| LOPA3 | Lobelia paludosa Nutt. | white lobelia | Campanulaceae
|
| LOPO | Lobelia portoricensis (Vatke) Urban | tibey tupa | Campanulaceae
|
| LOPUP3 | Lobelia puberula Michx. ssp. pauciflora (Bush) Bowden | Lobelia puberula var. pauciflora | Campanulaceae
|
| LOPUM | Lobelia puberula Michx. var. mineolana F. Wimmer | downy lobelia | Campanulaceae
|
| LOPUP | Lobelia puberula Michx. var. pauciflora Bush | downy lobelia | Campanulaceae
|
| LOPUP2 | Lobelia puberula Michx. var. puberula | downy lobelia | Campanulaceae
|
| LOPUS | Lobelia puberula Michx. var. simulans Fern. | downy lobelia | Campanulaceae
|
| LOPU | Lobelia puberula Michx. | downy lobelia | Campanulaceae
|
| LORE3 | Lobelia remyi Rock | grayleaf lobelia | Campanulaceae
|
| LORE4 | Lobelia reverchonii B.L. Turner | Lobelia puberula var. pauciflora | Campanulaceae
|
| LOROP | Lobelia robusta Graham var. portoricensis (A. DC.) McVaugh | robust lobelia | Campanulaceae
|
| LORO4 | Lobelia robusta Graham | robust lobelia | Campanulaceae
|
| LORO5 | Lobelia �rogersii Bowden | | Campanulaceae
|
| LORO3 | Lobelia rotundifolia Juss. ex A. DC. | roundleaf lobelia | Campanulaceae
|
| LOSA4 | Lobelia salicina auct. non Lam. | Lobelia vivaldii | Campanulaceae
|
| LOSIL | Lobelia siphilitica L. var. ludoviciana A. DC. | great blue lobelia | Campanulaceae
|
| LOSIS2 | Lobelia siphilitica L. var. siphilitica | great blue lobelia | Campanulaceae
|
| LOSI | Lobelia siphilitica L. | great blue lobelia | Campanulaceae
|
| LOSPO | Lobelia �speciosa Sweet (pro sp.) var. occidentalis Bowden (pro nm.) | | Campanulaceae
|
| LOSPS2 | Lobelia �speciosa Sweet (pro sp.) var. schneckii Bowden (pro nm.) | | Campanulaceae
|
| LOSPS3 | Lobelia �speciosa Sweet (pro sp.) var. speciosa | | Campanulaceae
|
| LOSP2 | Lobelia �speciosa Sweet (pro sp.) | | Campanulaceae
|
| LOSPC | Lobelia spicata Lam. var. campanulata McVaugh | palespike lobelia | Campanulaceae
|
| LOSPH | Lobelia spicata Lam. var. hirtella Gray | palespike lobelia | Campanulaceae
|
| LOSPL | Lobelia spicata Lam. var. leptostachys (A. DC.) Mackenzie & Bush | palespike lobelia | Campanulaceae
|
| LOSPO2 | Lobelia spicata Lam. var. originalis McVaugh | Lobelia spicata var. spicata | Campanulaceae
|
| LOSPP | Lobelia spicata Lam. var. parviflora Gray | Lobelia spicata var. spicata | Campanulaceae
|
| LOSPS | Lobelia spicata Lam. var. scaposa McVaugh | palespike lobelia | Campanulaceae
|
| LOSPS4 | Lobelia spicata Lam. var. spicata | palespike lobelia | Campanulaceae
|
| LOSP | Lobelia spicata Lam. | palespike lobelia | Campanulaceae
|
| LOSP3 | Lobelia splendens Humb. & Bonpl. ex Willd. | Lobelia cardinalis | Campanulaceae
|
| LOST6 | Lobelia strictiflora (Rydb.) Lunell | Lobelia kalmii | Campanulaceae
|
| LOTOH | Lobelia tortuosa Heller var. haupuensis St. John | Lobelia niihauensis | Campanulaceae
|
| LOTOI | Lobelia tortuosa Heller var. intermedia St. John | Lobelia niihauensis | Campanulaceae
|
| LOTO5 | Lobelia tortuosa Heller | Lobelia niihauensis | Campanulaceae
|
| LOVI3 | Lobelia villosa (Rock) St. John & Hosaka | alakai swamp lobelia | Campanulaceae
|
| LOVI4 | Lobelia vivaldii Lammers & Proctor | Vivald's lobelia | Campanulaceae
|
| LOYU | Lobelia yuccoides Hbd. | panaunau | Campanulaceae
|
| LOBEL | Lobelia L. | lobelia | Campanulaceae
|
| LOAR11 | Lobivia arachnacantha Buining & F. Ritter | | Cactaceae
|
| LOCA18 | Lobivia caespitosa (J.A. Purpus) Britton & Rose | | Cactaceae
|
| LOCO20 | Lobivia corbula (Herrera) Britton & Rose | | Cactaceae
|
| LOFA2 | Lobivia famatinensis (Speg.) Britton & Rose | | Cactaceae
|
| LOLA10 | Lobivia lateritia (Guerke) Britton & Rose | | Cactaceae
|
| LOBIV | Lobivia Britton & Rose | lobivia | Cactaceae
|
| LOAL6 | Lobothallia alphoplaca (Wahlenb.) Hafellner | | Hymeneliaceae
|
| LOME4 | Lobothallia melanaspis (Ach.) Hafellner | | Hymeneliaceae
|
| LOPR6 | Lobothallia praeradiosa (Nyl.) Hafellner | | Hymeneliaceae
|
| LORA4 | Lobothallia radiosa (Hoffm.) Hafellner | | Hymeneliaceae
|
| LOBOT | Lobothallia (Clauzade & Roux) Hafellner | lobothallia | Hymeneliaceae
|
| LOER6 | Lobraia erosa (Eschw.) Nyl. | Lobaria ravenelii | Lobariaceae
|
| LOLO3 | Lobraia lobulifera B. Moore | Lobaria tenuis | Lobariaceae
|
| LOVE2 | Lobraia verrucosa (Hudson) Hoffm. | Lobaria scrobiculata | Lobariaceae
|
| LOMA | Lobularia maritima (L.) Desv. | sweet alyssum | Brassicaceae
|
| LOBUL | Lobularia Desv. | lobularia | Brassicaceae
|
| LORO6 | Lochnera rosea (L.) Reichenb. ex Spach | Catharanthus roseus | Apocynaceae
|
| LOMA8 | Lodoicea maldivica (J. F. Gmelin) Pers. | double coconut | Arecaceae
|
| LODOI | Lodoicea Comm. ex Labill. | lodoicea | Arecaceae
|
| LOPU2 | Loeflingia pusilla Curran | Loeflingia squarrosa ssp. squarrosa | Caryophyllaceae
|
| LORA2 | Loeflingia ramosissima Weinm. | Cardionema ramosissimum | Caryophyllaceae
|
| LOSQA | Loeflingia squarrosa Nutt. ssp. artemisiarum Barneby & Twisselmann | spreading pygmyleaf | Caryophyllaceae
|
| LOSQC | Loeflingia squarrosa Nutt. ssp. cactorum Barneby & Twisselmann | spreading pygmyleaf | Caryophyllaceae
|
| LOSQS | Loeflingia squarrosa Nutt. ssp. squarrosa | spreading pygmyleaf | Caryophyllaceae
|
| LOSQA2 | Loeflingia squarrosa Nutt. var. artemisiarum (Barneby & Twisselmann) Dorn | Loeflingia squarrosa ssp. artemisiarum | Caryophyllaceae
|
| LOSQT | Loeflingia squarrosa Nutt. var. texana (Hook.) Dorn | Loeflingia squarrosa ssp. squarrosa | Caryophyllaceae
|