Scientific name: SalviaEnglish name: Vietnamese name: Bèo ongOther name:
Salvinia, the sole genus in the family Salviniaceae, is a floating fern. The Salviniaceae are related to the other water ferns, including the Mosquito fern, Azolla. Some sources include Azolla in Salviniaceae, although the genus is generally given its own family, Azollaceae.
Described by Séguier, in Pl. Veron. 3: 52. 1754.
Salviniaceae and the other fern families in order Salviniales are heterosporous, producing spores of differing sizes.
Leaf development in Salvinia is unique. The upper side of the floating leaf, which appears to face the stem axis, is morphologically abaxial (J. G. Croxdale 1978, 1979, 1981).