No key was found for the requested taxon, but it has only one child: Tinantia anomala. Showing where it is keyed below.

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Key to Commelinaceae

Commelinaceae

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(c) Guin, Karen - CC-BY
1 Spathes absent; inflorescence open and repeatedly branched; [tribe Tradescantieae]
(c) Krakowiak, Alaina - CC-BY
(c) Bradley, Keith
1 Spathes present, single or paired; inflorescence compact, unbranched.
(c) Hill, Sonnia
(c) Bradley, Keith
  2 Spathes paired, terminating the stem, resembling foliage leaves in size, shape, texture, and coloration; [tribe Tradescantieae]
(c) kcthetc1 - CC0
  2 Spathes single (or paired in Callisia), either terminal or axillary, differing from the foliage leaves (in Commelina folded, heart-shaped when spread, and usually pale-green, in Cuthbertia and Murdannia scale-like, scarious, and inconspicuous, sometimes hidden by foliage leaves in Murdannia).
(c) Spaulding, Dan - CC-BY-NC, permission granted to NCBG
(c) Fleming, Gary P.
    3 Spathe folded, heart-shaped when unfolded, usually pale-green, closely subtending and surrounding the flower pedicels; petals unequal, the 2 upper petals larger and usually more deeply colored than the lower petal (which is sometimes absent); [tribe Commelineae]
(c) Shaw, Joey
(c) kcthetc1 - CC0
      4 Leaves not glaucous; spathe folded; fertile stamens 3, their filaments glabrous; [collectively widespread in our region]
(c) lanechaffin - CC0
      4 Leaves glaucous; spathe open; fertile stamens 6 (though of 4 disparate forms), their filaments bearded with purple or purple-and-yellow hairs; [TX only in our region]
    3 Spathe scale-like, scarious, and inconspicuous, not closely subtending and surrounding the flower pedicels; petals equal, in both size and coloration.
(c) Sorrie, Bruce A. - CC-BY
(c) Bradley, Keith - CC-BY-NC, permission granted to NCBG
        5 Leaves linear, > 20× as long as wide; petals bright pink (rarely white); [tribe Tradescantieae]
(c) Stuart, Will
        5 Leaves lanceolate, < 20× as long as wide; petals white, pink, purplish, or bluish.
(c) Horn, Jay - CC-BY
          6 Fertile stamens 3, alternating with 3 staminodia; petals pink to purplish or bluish; [tribe Commelineae]
(c) Hill, Sonnia
          6 Fertile stamens 0-6, all fertile (no staminodes); petals white to pink; [tribe Tradescantieae]