Elasis D.R.Hunt, Kew Bull. 33(2): 332. 1978.

Pellegrini, Marco O. O., 2017, Morphological phylogeny of Tradescantia L. (Commelinaceae) sheds light on a new infrageneric classification for the genus and novelties on the systematics of subtribe Tradescantiinae, PhytoKeys 89, pp. 11-72: 29

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scientific name

Elasis D.R.Hunt, Kew Bull. 33(2): 332. 1978.


1. Elasis D.R.Hunt, Kew Bull. 33(2): 332. 1978.  Fig. 6 K–LView Figure 6

Tradescantia sect. Coholomia  D.R.Hunt, Kew Bull. 35(2): 440. 1980., Syn. nov. Type species. T. guatemalensis  C.B.Clarke ex Donn.Sm. [≡ E. guatemalensis  (C.B.Clarke ex Donn.Sm.) M.Pell.].

Type species.

Elasis hirsuta  (Kunth) D.R.Hunt (≡ Tradescantia hirsuta  Kunth).


A taxonomic revision of Elasis  is currently being prepared (Pellegrini and Hunt, in prep.) and should address pending taxonomic problems in the genus. In gross flower morphology, Elasis  can be confused with Tradescantia  and most of its segregate genera (i.e. some species of Callisia  , Gibasis  , Matudanthus  , Thyrsanthemum  , Gibasoides  , and Sauvallea  ). Nonetheless, Elasis  can be easily differentiated from these genera due to its sessile inflorescence, with 1-several fasciculate, non-geniculate cincinni, pedicellate flowers, petals lacking tannin cells, inconspicuous connectives, and truncate stigma (Fig. 5View Figure 5, clade C; Fig. 6 K–LView Figure 6).