A virgate shrub, growing to a height of 4 ft., glabrous in all parts; branches straight, slender, rough with minute raised points. Leaves opposite or occasionally 3 in a whorl; petiole 1/2–1 lin. long, blade 1 1/2–3 1/2 in. long, 1/8– 1/2 in. broad, 4 1/2–12 times as long as broad, linear to linear-lanceolate, acute or acuminate; base obtuse. Cymes axillary, subsessile, or very shortly pedunculate, 10–20-flowered; bracts 1 lin. long, ovate-lanceolate, acute; pedicels 1–2 lin. long. Sepals 1/2–1 lin. long, ovate, acute or obtuse, minutely and sparsely ciliate. Corolla-tube 1–1 1/4 lin. long, campanulate; lobes 1 1/2–1 3/4 lin. long, 1/2– 2/3 lin. broad, narrowly oblong or lanceolate, obtuse, twice as long as the tube, pale yellow; sinus-pockets truncate, not ciliate. Coronal-lobes arising from the middle of the corolla-tube, 1/2 lin. long, fleshy, clavate, rhomboidal or oblong-spathulate, obtuse or acute, sometimes incurved at the point.
