Stem somewhat quadrangular in the younger parts (in the dried state), slightly scabrous, dark red-brown. Leaves with sparsely puberulous petioles 3–5 lin. long; blade 2–4 1/2 in. long, 1/2–1 1/2 in. broad, oblong-lanceolate, acute or shortly acuminate, rounded at the base, quite glabrous on both sides; veins numerous, horizontal, straight and parallel, intramarginal vein about 1/2 line distant from the margin. Cymes subsessile, very lax, 3–6-flowered; pedicels 1 1/2–2 1/4 in. long, slender, glabrous, with one or two pairs of bracts towards the base; bracts 1/2 lin. long, very broadly ovate, acute, with a few hairs on the back. Sepals 3/4 lin. long, broadly ovate, acute, minutely ciliate, and with a few minute hairs on the back. Corolla lobed nearly to the base; lobes 3 lin. long, oblong, obtuse, with a short subrectangular fleshy boss at their base. Coronal-lobes longer than the corolla-lobes, filiform, erect, tortuous. Lobules alternating with the stamens about as long as the filaments and reaching to the gland of the pollen-carrier, quadrate, truncate.
