Trichostema setaceum is an herbaceous flowering plant. Commonly referred to as narrowleaf bluecurls, it is in the Lamiaceae (mint family). It grows in sandy soil, sandhills, and rocky uplands.
Description Narrowleaf bluecurls is an annual growing to . Stunning purple-blue flowers are borne from September to October. The stamens extend far beyond the petals, growing up to . The leaves of T. setaceum are entire.Radford, Albert E., Harry E. Ahles, and C. Ritchie Bell. Manual of the Vascular Flora of the Carolinas. 1964, 1968. The University of North Carolina Press. 897. Print.
Conservation It is listed as endangered in Kentucky, New York, Ohio, and Pennsylvania. It is critically imperiled in Missouri.
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