Perennial (Barter). Stems creeping and rooting at the base, then erect, 2–4 ft. high, 2–3 1/2 lin. thick, straight, simple, branched only at the inflorescence, hollow, glabrous. Leaves 2–3 1/2 in. long, 1–2 1/2 in. broad, linear, acute, narrowed at the base, glabrous, erect, those at the base of the flowering branches gradually smaller and reflexed. Panicle 3–8 in. long, oblong or corymbose, rather compact; branches ascending 1/2–4 in. long, naked below, ending in dense many-flowered cymes, glabrous or most minutely puberulous on the pedicels and calyx. Pedicels 1–4 lin. long. Sepals 1 1/2–2 lin. long, lanceolate or narrowly ovate-lanceolate, acute. Corolla intense blue; lobes 3–4 lin. long, 1 1/2–2 lin. broad, elliptic or elliptic-ovate, rounded at the apex. Staminal-filaments 2 lin. long, filiform, with a deltoid-ovate or broadly rhomboid dilated base; anthers 1 1/3–1 1/2 lin. long. Hypogynous disk rather inconspicuous, scarcely 1/2 lin. in diam. Styles 3 lin. long. Capsule globose or ellipsoid, 1 1/2–2 lin. long.
