Source de la synonymie
Evrard, C. & Van Hove, C. 2004. Taxonomy of the American Azolla species (Azollaceae) : a critical review. Syst. Geogr. Pl., 74: 301-318. : 313 [CD_REF = 85469] Azolla filiculoides Lam., 1783

 

Date de publication : Mém. Soc. Linn. Paris, 6: 178. 1827.

Type : "Crescit in aquis Carolinae et Virginiae." [protologue].
U.S.A., Caroline et Virginie, s.d., stérile, anonyme s.n. (HT: P [ex hb. Desv.]).
D'après Evrard & Van Hove (2004): "The type specimens of both A. arbuscula and A. densa are sterile and have unicellular leaf trichomes and the two species are thus synonyms of A. filiculoides."
     Références : Evrard et al. (2004)