Annual herb, perhaps sometimes perennating, taproot simple, stems 1 to several from crown, (70-)150-450 mm tall, erect or decumbent, simple or loosely branched, pubescent, hairs coarse, c. 0.4-0.7 mm long, patent to recurved, closely leafy. Leaves alternate, fascicled, largest primary leaves 5-12 x 0.8-1.5 mm, linear or narrowly elliptic, apex acute, base slightly narrowed or not, margins entire, texture moderately thick, midrib raised on lower surface, invisible above, coarse hairs up to 0.1-0.8 mm long on margins and midline on lower surface, upper surface usually glabrous, sometimes with scattered hairs; axillary leaves similar but smaller. Inflorescence a more or less corymbose panicle composed of congested racemes globular in first flower, elongating slightly in fruit. Bract adnate to minute pedicel only or to extreme base of calyx tube as well, lowermost 3-4.5 x 1.4-2.2 mm, elliptic, deeply concave, acute, hairs c. 0.4-1.3 mm long on margins, c. 0.15-0.8 mm on both faces. Pedicels up to 0.1-0.7 mm long. Calyx 1.8-2.5 mm long, campanulate, 54obed roughly halfway to base, 2 anticous lobes slightly larger than other three, all lobes narrowly deltoid, acute, hairs 0.4-0.8 mm long on margins, 0.25-1.1 mm all over outside, much shorter hairs inside. Corolla tube 4.2-6 mm long, narrowly funnel-shaped, limb 4.5-6 mm across lateral lobes, posdcous lobes 1.3-2.5 x 1-1.5 mm, anticous lobe 2-2.8 x 1.5-2.1 mm, all lobes broadly elliptic, white, yellow to bright orange patch down back of throat. Stamens: posticous filaments 1-1.5 mm long, anthers in throat or just visible in mouth; anticous filaments 1.5-2.5 mm long, anthers shortly exserted. Stigma and style c. 4-7 mm long, style glabrous. Ovary c. 0.7 x 0.2 mm. Coccus c. 2 x 1.2 mm (few seen), dark brown, held within persistent calyx.
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Annual to 45 cm. Leaves fascicled, linear-elliptic, margins and midrib hairy. Flowers in small glomerules arranged in a corymbose panicle, white, back of throat yellow to orange, bracts hairy.