Leaves up to 6 x 1·5 cm. (in F.Z. area), broadly to narrowly elliptic or lanceolate, ± epetiolate, often shortly acuminate at the apex, cuneate, obtuse or cordate at the base; lamina surfaces and margin almost always dotted with irregular blackish glands.
Stamens c. 2 mm. long, inserted in a ring below the corolla lobes; connective produced above the anther into a fleshy apiculus.
Flowers covered with short–stalked glands on all parts, especially on inner surface of calyx and corolla and on stamens.
Corolla c. 3·8 mm. long, campanulate, white, pink or mauve; lobes equalling or slightly longer than calyx, elliptic.
Capsule 3–4(5) mm. in diameter, globose, dehiscing by 5 valves, these remaining erect, not recurving.
Pedicels up to 5 mm. long (in fruit), each subtended by a bract 2–3 mm. long.
Racemes up to 30 cm. long, spicate, lax or congested, terminal and axillary.
Seeds 0·8–1 mm. long, ± tetrahedral, blackish, smooth or minutely granular.
Calyx divided almost to the base; lobes c. 2·5 mm. long, oblong–elliptic.
Ovary c. 1 mm. long, globose, with style c. 1 mm. long.
Stems erect or decumbent, terete, reddish, leafy.
Robust perennial herb up to 1 m. tall.
A branched herb to 4 ft. high
Flowers white or pink