Tradescantia subaspera

Tradescantia subaspera, the zigzag spiderwort, is a species of flowering plant in the family Commelinaceae, native to the eastern United States. Its zigzagging stems and wider leaves distinguish it from Tradescantia virginiana. It is recommended for shady naturalistic garden settings. It has three petals which are violet-blue to purple in color. Flowers bloom May to September.

Subtaxa
The following varieties are accepted:
 * Tradescantia subaspera var. montana (Shuttlew. ex Small & Vail) E.S.Anderson & Woodson
 * Tradescantia subaspera var. subaspera