Stem 3 ft. or more high, 3 1/2 lin. thick at the base, simple, thinly puberulous. Leaves spreading; petiole 3 1/2–5 lin. long; blade 4 3/4–6 1/4 in. long and up to 3/4 in. broad, lanceolate-oblong or linear-oblong, usually acuminate, auriculate-cordate at the base, scabrous on both sides. Umbels lateral, pedunculate, several-flowered. Peduncle 1 1/2–2 in. long, suberect, puberulous Pedicels 3/4 in. long. Sepals 3 lin. long, 3/4 lin. broad, linear-lanceolate, acute, densely puberulous. Corolla campanulate, greenish; lobes 4 lin. long, nearly 1 1/2 lin. broad, oblong, obtuse, glabrous on the back, densely bearded with white silky hairs on the upper half of the inner face. Coronal-lobes shorter than the staminal-column, erect or suberect, fleshy, 3-lobed, with a slightly thickened keel on the inner face, the obtuse middle lobe overtopping the very obtuse lateral lobes. Anther-appendages subquadrate-rounded, very obtuse, inflexed on the style-apex.
