Clerodendrum thomsoniae Balf.

High-climbing herbaceous or woody vine to 7 m long, more rarely a low shrub, 2-2.5 m tall; branchlets grayish, obtusely tetragonal, slender glabrate; twigs purplish or brown, densely puberulent; leaf-scars often large and circular, borne on prominent corky sterigmata, not spinescent. Leaves opposite; thin-chartaceous or membranous, often drying dark, entire, elliptic or elliptic-ovate, 6-14.5 cm long and 317 cm wide, apically short-acuminate, basally rounded or subacute, dark-green above, lighter beneath, glabrate on both surfaces or slightly pulverulent along the larger veins; petioles 0.8-3.5 cm long, minutely purplish-puberulent. Inflorescences axillary, cymose, abundant near the apices of the twigs; cymes solitary, opposite, spreading, 5-9 cm long and 4-8.5 cm wide, loosely flowered; peduncles slender, 2.6-6.5 cm long, densely puberulent; pedicels slender, 7-16 mm long, puberulent; foliaceous bracts none; bractlets and prophylls linear, 2-11 mm long to 1 mm wide or subulate, puberulent. Flovers with the calyx pale yellowish-green changing to cream-color and then pure white, fading to yellow or pink, more or less pentagonal during anthesis, 1.8-2 cm long, puberulent, deeply 4-fid, the lobes broadly ovate, 8-10 mm wide, apically acute or short-acuminate; corolla hypocrateriform, dark-red to scarlet or crimson, the tube slender, ca. 2.5 cm long, the lobes wide-spreading or reflexed, 6-10 mm long and 3.5-4 mm wide. Fruit drupaceous, glossy-black with a brilliant red aril uniting the 4 pyrenes; fruiting calyx fading to rose-color.

Not known

Can be grown by cuttings or seedlings.