stem erect, villous; leaves 2–3 1/2 lin. long, 1/4–1 1/4 in. broad, broadly ovate, acute or acuminate, sparsely hairy on both sides, crenate-serrate, base cordate; petioles variable in length, 1/2–3 in. long, villous; inflorescence a laxly branched (rarely simple) panicle 6–10 in. long; verticils usually in 2 opposite sets of 3 on long peduncles (peduncles rarely absent); pedicels often 1/4 in. long, slender; bracts 2–4 lin. long, ovate, acute; fruiting calyx 4 lin. long, tubular-campanulate; flowering calyx 2 lin. long, densely villous, campanulate; teeth deltoid, subequal in length, as long as the tube; uppermost tooth broader than the 4 subequal lower ones; corolla pubescent outside; tube 4 lin. long, much deflexed about the middle; upper lip 3 lin. long, orbicular; lower lip 3 lin. long, 1 lin. deep, boat-shaped; upper pair of stamens 2 lin. long; lower pair 2 1/2 lin. long; style longer than the stamens; stigma equally 2-fid; nutlets globosely ovoid, 1 lin. long, 3 lin. broad, yellowish brown. null
