an erect branched undershrub; stems obtusely quadrangular, hirsute with fine whitish hairs; leaves subsessile or shortly petiolate, 1 1/4–1 3/4 in. long, 3/4–1 in. broad, fleshy, elliptic or obovate, usually rounded at the apex, hairy on both surfaces, cuneate at the base; inflorescence of elongate many-flowered spike-like racemes; verticils about 6-flowered, close; bracts submembranous, large, 4 lin. long and broad, broadly ovate or suborbicular, with a long acumen, ciliate, deciduous; pedicels short, 1–2 lin. long; fruiting calyx 3 lin. long; upper tooth 1 3/4 lin. long, broader than long, bluntly and shortly acuminate, strongly nerved; other 4 teeth lanceolate, acute, ciliate, 2 lower the longest; flowering calyx 1 1/4 lin. long, campanulate, hairy; corolla deep purple (Galpin); tube subcylindric, 3 lin. long, deflexed about the middle; upper lip erect, subquadrate, 1 1/4 lin. long, 4-lobed; lower lip 4 lin. long, boat-shaped; nutlets 3/4 lin. long, 1/2 lin. broad, globosely ovoid, smooth, dark brown. null