| Campanulaceae | * |
Legousia arvensis
| Durande | | |
| Campanulaceae | |
Legousia balearica
| Sennen | Bol. Soc. Iber. Ci. Nat. 28: 171 | 1929 [1930] |
| Campanulaceae | |
Legousia biflora
| (Ruiz & Pav.) Britton | Mem. Torrey Bot. Club 5(20): 309 | 1894 |
| Campanulaceae | |
Legousia castellana
| (Lange) Samp. | Herb. Port. 127 | 1913 |
| Campanulaceae | ** |
Legousia coloradoensis
| (Buckley) Briq. | Candollea 4: 332 | 1931 |
| Campanulaceae | |
Legousia coloradoensis
| (Buckley) A.Heller | Contr. Herb. Franklin Marshall Coll. 1: 99 | 1895 |
| Campanulaceae | * |
Legousia conferta
| (Moench) Samp. | Herb. Port. 127 | 1913 |
| Campanulaceae | * |
Legousia durandei
| (L.) Delarbre | Fl. Auvergne ed. 2: 45 | 1800 |
| Campanulaceae | ** |
Legousia ericoides
| H. Buek | Ind. Candolleana 3: 255 | 1858 |
| Campanulaceae | |
Legousia falcata
| (Ten.) Fritsch | Mitt. Naturwiss. Vereins Univ. Wien, n.s. 5: 100 | 1907 |
| Campanulaceae | |
Legousia hybrida
| Delarb. | | |
| Campanulaceae | |
Legousia hybrida
| (L.) Delarbre | Fl. Auvergne ed. 2: 47 | 1800 |
| Campanulaceae | |
Legousia julianii
| Briq. | Candollea 4: 332 | 1931 |
| Campanulaceae | |
Legousia leptocarpa
| (Nutt.) Britton | Mem. Torrey Bot. Club 5(20): 309 | 1894 |
| Campanulaceae | * |
Legousia parviflora
| Gray | Nat. Arr. Brit. Pl. 2: 410 | 1821 |
| Campanulaceae | |
Legousia pentagonia
| (L.) Thell. | Vierteljahrsschr. Naturf. Ges. Zürich 46: 465 | 1908 |
| Campanulaceae | |
Legousia pentagonia
| Druce | | |
| Campanulaceae | |
Legousia perfoliata
| (L.) Britton | Mem. Torrey Bot. Club 5(20): 309 | 1894 |
| Campanulaceae | |
Legousia scabra
| (Lowe) Gamisans | Cat. Pl. Vasc. Corse 100 | 1985 |
| Campanulaceae | |
Legousia skvortsovii
| Proskur. | Byull. Moskovsk. Obshch. Isp. Prir. Otd. Biol. 85(4): 95 | 1980 |
| Campanulaceae | |
Legousia speculum
| Fisch. ex A. DC. | Monogr. Campan. 347 | 1830 |
| Campanulaceae | |
Legousia speculum-veneris
| (L.) Durande ex Vill. | Hist. Pl. Dauphiné 2: 338 | 1786 |
| Campanulaceae | |
Legousia speculum-veneris
| Chaix | | |