Stems erect, simple but branching profusely within inflorescence, rarely so below, patent-or somewhat retrorse-pubescent or crisped pubescent, decurrent from leaf bases.
Corolla 8–10.5 mm. long, white with yellow-orange throat, tube 2–2.5 mm. long; limb 5.5–8 mm. long, glabrous, lobes c. 1–1.25(2) mm. long, oblong.
Inflorescence compactly-paniculate, composed of many spikes 2.5–5.5(8) cm. long, with flowers crowded in spikes.
Bracts 3.5–5.6 mm. long, ovate, acuminate, glabrous.
Calyx 2–2.5(2.8) mm. long, ovate, obtuse, glabrous.
Capsule c. 4 mm. long, oblong in outline.
Perennial herb, 30–120 cm. or more tall.