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Fibrous-rooted perennial 3–7 dm; stem branched above, softly villosulous; lvs chiefly cauline, lance-ovate or lance-triangular, 5–10 cm, crenate, truncate to subcordate at base, rugose and glabrescent above, canescent beneath; fls very numerous in crowded whorls of 2–6 subtended by ovate anthocyanic bracteal lvs 4–10 mm, the dense spike-like infl 1–2 dm; cal villous, 6–8 mm, the upper lip minutely 3-toothed, shorter than the lanceolate lobes of the lower lip; cor blue, 9–12 mm, the tube no longer than the cal; 2n=12, 14. Native of Europe and w. Asia, intr. in fields and waste places here and there in our range. June, July. (S. sylvestris, misapplied, the name properly applied to a hybrid of nos. 3 [Salvia nemorosa L.] and 4 [Salvia pratensis L.])
A herb.
