Proboscidea louisianica subsp. louisianica

Viscid, prostrate or ascending herb to 40 cm high; branches opposite. Leaves c. orbicular, 6–15 cm long, 6.5–13 cm wide, cordate, apex rounded to acute, margins entire to shallowly sinuate but not lobed, surfaces glandular-pubescent, more densely beneath and on margins; petiole 5–19 cm long. Racemes open, 9–20 cm long; pedicels 2.5–3.5 cm; calyx 1.5–2.5 cm, sometimes pinkish, lobes acute or obtuse, c. one-third as long as calyx, the middle lobe longest; corolla 3.5–6 cm long, limb 3–5 cm diam., cream to purplish-pink, often with yellow lines in the throat and red or brown spots on the limb. Capsule body ellipsoid, 5–9 cm long, 1.5–3 cm wide, exocarp fleshy, pubescent, deciduous, exposing the woody endocarp; horns 10–17 cm long curved to an acute, hooked tip; seeds heavily pitted. Flowers Dec.–Jun.