Stems simple or branched, 20–50(–60) cm; branches widely spreading, quadrangular-ridged, scabridulous or glabrate. Leaves spreading to +/- reflexed at mid stem, distalmost sometimes ascending; blade linear-filiform, 10–30 x 0.2–0.6 mm, margins entire, adaxial surface glabrous or slightly scabrous; axillary fascicles absent. Inflorescences racemes, flowers 1 or 2 per node; bracts shorter than pedicels. Pedicels spreading to slightly spreading-ascending, 12–28 mm, glabrous. Flowers: calyx campanulate to funnelform, tube 1.5–3 mm, glabrous, lobes spreading, deltate, 0.1–0.5 mm; corolla pale to dark pink, rarely white, without 2 yellow lines and red spots in abaxial throat, 14–20 mm, throat glabrous externally and within across bases and sinus of adaxial lobes, lobes: abaxial spreading, adaxial projected flatly over anthers, 2.5–6 mm, unequal, abaxial 4–6 mm, adaxial 2.5–3 mm, glabrous externally; proximal anthers parallel to filaments, distal perpendicular to filaments, pollen sacs 1.4–2.6 mm; style exserted, 6–9(–10) mm. Capsules globular, 3–5 mm. Seeds yellowish brown to tan, 0.5–0.7 mm. 2n = 28.
Phenology: Flowering early Sep–mid Oct.
Habitat: Dry open pine savannas, dry oak openings, dry sandy ground, mesic flatwoods, margins of bogs and seepage slopes, dry roadsides.
Elevation: 0–70 m.
Ala., Fla., Ga.
Agalinis divaricata is largely a Floridian species, just entering southeasternmost Alabama and southwestern Georgia. In Florida, it is found from the Panhandle to the northern peninsula.