Lobelia langeana Dusén (1910: 18)

Rollim, Isis De Mello, Coelho, Guilherme Peres, Miotto, Silvia Teresinha Sfoggia, Iganci, João Ricardo Vieira & Oliveira, Marcelo Trovó Lopes De, 2022, Nomenclatural and taxonomic survey of the South American clade of Lobelia section Rhynchopetalum (Campanulaceae), Phytotaxa 539 (1), pp. 45-54 : 51

7. Lobelia langeana Dusén (1910: 18) .

Type:— BRAZIL. Paraná: “Brasilienses e civitate Paraná collectae, Serra do Mar , Ypiranga ad marginem viae ferr.”, 21 Februario 1904, P. Dusén 3329 (lectotype, designated here: S! [ S05-1990 ] , isolectotypes: MO! [ MO1291435 ], NY! [ 00547161 ], R! [ 98315 ]) .

Notes:— Dusén (1910) described Lobelia langeana based on the specimen Dusén 3329, nowadays found in the herbaria MO, NY, R, and S. We designate here the specimen S05-1990 as the lectotype, as it perfectly matches the species description and is housed at the institution where the author carried out most of his research. Furthermore, this specimen contains fragments of opened flowers, suggesting that the author used this sample to describe the species.