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FNA | Family List | FNA Vol. 22 | Commelinaceae | Tradescantia

4. Tradescantia ernestiana E. S. Anderson & Woodson, Contr. Arnold Arbor. 9: 58, plate 8, map 4. 1935.

Herbs, erect or ascending, rarely rooting at nodes. Roots (1--)1.5--5 mm thick, fleshy. Stems not flexuous, 5--40 cm; internodes usually glabrous. Leaves spirally arranged, sessile; blade dull green, linear-lanceolate to lanceolate-oblong, 9--27 ´ 1--4 cm (distal leaf blades wider than sheaths when sheaths opened, flattened), base cuneate to rounded, apex acuminate, not glaucous, glabrous or sparsely puberulent. Inflorescences terminal; bracts foliaceous. Flowers distinctly pedicillate; pedicels 2--3.2 cm, minutely pilose; sepals somewhat inflated, 9--16 mm, uniformly eglandular-pilose; petals distinct, deep blue, purple, or rose-red, broadly ovate, not clawed, 1.2--1.5 cm; stamens free; filaments bearded. Capsules 5--7 mm. Seeds 2--3 mm. 2n = 12.

Flowering spring (Mar--May). Wooded hillsides, ledges and bluffs, occasionally along streams or in pastures; Ala., Ark., Ga., Mo., Okla., Tex.

Tradescantia ernestiana is sympatric with, and easily confused with, T. virginiana in northern Alabama and perhaps northern Georgia [reported from Georgia by C. Sinclair (1967, p. 87), but no specimens are cited and I have seen none]. At present, the two species can be separated only by the relative width of the blade and sheath of the distal leaves. They are obviously closely related and should be studied in the field in the southern Appalachians where their ranges overlap. The Texas record is taken from C. Sinclair (1967).

The hybrid Tradescantia ernestinana ´ T. ozarkana is known from Arkansas and Missouri.


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