Commelinaceae

Outer perianth segments green, herbaceous; leaf sheath closed (i.e., the margins fused) Commelinaceae
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Fertile stamens 6; filaments bearded
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Petals >4 mm long Tradescantia
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Leaves purplish-red underneath, silvery stripes on the upper surface, lanceolate-ovate, c. 5 cm long. Leaf sheaths with long ciliate hairs. Petals pink. Filament hairs purple. Weak, procumbent or ascending, glabrous, perennial herb. Garden plant occasionally naturalized. Introd. from Mexico. Fl. spring–summer Tradescantia zebrina
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Leaves green on lower surface, ovate-acute, c. 5 cm long, shining, ciliate at the base, without a distinct petiole. Petals white. Filament hairs white. Weak procumbent or ascending, perennial, herb. A common weed in shaded places. Introd. from S. America. Fl. spring–summer Wandering Jew Tradescantia fluminensis