Full nameTradescantia ‘Japonica’.
Name statusEstablished but questionable, it may refer to a unique cultivar or may refer to Tradescantia fluminensis or a similar species

Established with a description by James Backhouse & Son, Ld. (1905). Because it was published before 1959, the Latin name can be established (Brickell et al., 2016, Art. 21.11).

The name most likely refers to Tradescantia fluminensis or another similar species, but there is not enough information to definitively link it to any plant known today. The name is established and treated as lost or an unknown synonym.
ClassificationIt was originally published as Tradescantia japonica. This is not an accepted species (POWO, 2022), so instead is treated as a cultivar with the same name (Brickell et al., 2016, Art. 21.6).
Legal protectionNone.
AvailabilityThe name may refer to Tradescantia fluminensis, still widely in cultivation. But this is not certain, so the plant is assumed to be lost.


Described by James Backhouse & Son (1905, p. 13).



James Backhouse & Son, Ld. (1905). Stove & Greenhouse Plants, Ferns, Palms, Carnations, Clematis, Pot Roses, Bedding Plants, &c. &c. RHS Lindley Library.

Brickell, C. D., Alexander, C., Cubey, J. J., David, J. C., Hoffman, M. H. A., Leslie, A. C., Malécot, V., Jin, X. (2016). International Code of Nomenclature for Cultivated Plants. PDF link.

POWO. (2022). Tradescantia. Plants of the World Online. Link.