an annual herb, erect, simple or branched, slender, viscid-pubescent, 2–8 in. high, more or less leafy except the tops of the stem and branches; branches alternate; leaves opposite or the upper alternate, linear, narrowly oblong or oblanceolate, obtuse, more or less narrowed towards the sessile or subsessile base, viscid-puberulous, denticulate or entire, 1/4– 5/8 in. long, 1/20– 1/7 in. broad; spike dense, subcapitate, viscid-puberulous, 2/3– 1/2 in. in diam., many-flowered; bract linear-ovate, obtuse, 1/8– 1/6 in. long, viscid-puberulous on the back; flowers subsessile, orange-yellow; calyx 1/8 in. long, bilabiate about half-way down, 5-dentate; teeth viscid-puberulous, 2 small, subdeltoid, 3 longer; corolla-tube about equalling the calyx or slightly exceeding it, nearly glabrous; limb 1/5– 1/4 in. in diam., subpatent; lobes oval-oblong, rounded, entire, 1/8– 1/6 in. long; throat glabrous; stamens glabrous, exserted; style longer than the corolla-tube. null