glabrous; leaves mostly opposite, sessile, cordate at base, linear-oblong or ovate-oblong, very obtuse, undulate, thick, faintly 3-nerved; peduncles terminating short ramuli, 2-flowered; bract oblong, truncate, short; calyx obconic, truncate; unopened corolla suburceolate at base, clavate, at length separating quite to the base into 5 (sometimes 4) spreading or revolute petals. Robust, with ashen back. Leaves 1–2 inches long, varying much in shape, but always very blunt and conspicuously cordate at base. Branches virgate, with many short, floriferous ramuli, 1–2 inches long, with 1–2 pair of leaves. Common peduncle and pedicels both 4–5 lines long. Bract much shorter than the calyx, somewhat ciliate. Petals at length quite separate, broad at base, narrowing in the middle, spathulate at the apex.
