Clerodendrum thomsoniae is a species of flowering plant in the genus Clerodendrum, native to tropical west Africa from Cameroon west to Senegal. It is an evergreen liana growing to 4 m tall, with ovate to oblong leaves 8–17 cm long.
Clerodendrum thomsoniae is a vigorous twining shrub with striking flowers. The leaves are rather coarse, heart-shaped, up to 13cm (5 inch) long and 5cm (2 inch) wide and coloured deep green with slightly paler vein markings. Flowers, which are produced on wiry flower stalks st stems ends during the spring and summer and early autumn, grow in clusters of 10 to 30. Each flower consists of 2cm (0.8 inch) long, white (or else greenish white), bell-shaped calyx with a scarlet, star-shaped bloom peeping through a split in its tip. The contrast of scarlet and white is highly effective.