- Lobelia alsinoides
- Lobelia amoena, Southern Lobelia
- Lobelia anceps, Angled Lobelia
- Lobelia andrewsii, Rapuntium gracile Andrews CPresl
- Lobelia angulata, Lawn Lobelia
- Lobelia appendiculata, Pale lobelia
- Lobelia aquatica
- Lobelia archeri
- Lobelia arnhemiaca
- Lobelia assurgens
- Lobelia beaugleholei, Showy Lobelia
- Lobelia berlandieri, Berlandiers lobelia
- Lobelia boykinii, Boykins Lobelia
- Lobelia bracteata
- Lobelia brevifolia, Shortleaf lobelia
- Lobelia browniana, Rapuntium brownianum Schult CPresl
- Lobelia canbyi, Canbys Lobelia
- Lobelia cardinalis, Cardinalflower
- Lobelia chinensis, Chinese lobelia
- Lobelia cleistogamoides
- Lobelia cliffortiana, Cardenala azul
- Lobelia concolor, Pratia erecta Gaudich
- Lobelia costata
- Lobelia darlingensis
- Lobelia dentata, Rapuntium dentatum Cav CPresl
- Lobelia dioica
- Lobelia dortmanna, Water Lobelia
- Lobelia douglasiana, Isotoma armstrongii EWimm
- Lobelia dressleri
- Lobelia dunbariae
- Lobelia dunnii, Dunns lobelia
- Lobelia elongata, Longleaf Lobelia
- Lobelia erinus, Bedding Lobelia
| - Lobelia fastigiata
- Lobelia feayana, Bay lobelia
- Lobelia fenestralis, Fringeleaf lobelia
- Lobelia filiformis
- Lobelia fissiflora
- Lobelia flaccidifolia, Foldear Lobelia
- Lobelia floridana, Florida Lobelia
- Lobelia gattingeri
- Lobelia gaudichaudii, Koolau Range lobelia
- Lobelia gelida
- Lobelia georgiana
- Lobelia gibbosa, Tall Lobelia
- Lobelia glandulifera
- Lobelia glandulosa, Glade Lobelia
- Lobelia gloria-montis, Bog lobelia
- Lobelia grayana, Haleakala lobelia
- Lobelia gruina
- Lobelia heterophylla, Wing-seeded Lobelia
- Lobelia hillebrandii, Maui lobelia
- Lobelia homophylla, Pineland lobelia
- Lobelia hypoleuca, Kuhiaikamoowahie
- Lobelia inflata, Indian-tobacco
- Lobelia irasuensis
- Lobelia irazuensis
- Lobelia irrigua, Rapuntium irriguum RBr CPresl
- Lobelia kalmii, Ontario lobelia
- Lobelia kauaensis, Lava lobelia
- Lobelia laxiflora, Sierra Madre lobelia
- Lobelia leptostachys
- Lobelia leucotos
- Lobelia longicaulis
- Lobelia membranacea, Rapuntium membranaceum RBr CPresl
- Lobelia monostachya, Waianae Range lobelia
| - Lobelia niihauensis, Niihau lobelia
- Lobelia nummularia
- Lobelia nuttallii, Nuttalls Lobelia
- Lobelia oahuensis, Oahu lobelia
- Lobelia paludosa, White Lobelia
- Lobelia pedunculata, Rapuntium pedunculatum RBr CPresl
- Lobelia portoricensis, Tibey tupa
- Lobelia pratioides
- Lobelia puberula, Downy Lobelia
- Lobelia purpurascens, White Root
- Lobelia quadrangularis, Rapuntium quadrangulare RBr CPresl
- Lobelia rarifolia, Rapuntium parvifolium RBr CPresl
- Lobelia remyi, Grayleaf lobelia
- Lobelia reverchonii
- Lobelia rhombifolia, Tufted Lobelia
- Lobelia rhytidosperma, Wrinkle-seeded Lobelia
- Lobelia rotundifolia, Roundleaf lobelia
- Lobelia seguinii
- Lobelia simplicicaulis, Rapuntium simplicicaule RBr CPresl
- Lobelia simulans
- Lobelia siphilitica, Great Lobelia
- Lobelia spicata, Palespike lobelia
- Lobelia stenophylla
- Lobelia surrepens
- Lobelia tenuior, Slender Lobelia
- Lobelia trigonocaulis, Forest Lobelia
- Lobelia urens, Heath Lobelia
- Lobelia villosa, Alakai swamp lobelia
- Lobelia winfridae
- Lobelia xalapensis
- Lobelia yuccoides, Panaunau
- Lobelia zeylanica
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