Pignut

suaveolens: sweet-scented

Erect, strongly aromatic branched annual or short-lived perennial herb up to 3 m tall. Stems 4-angled, velvety with longer hairs and gland dots. Leaves opposite, ovate, 2.5-10 cm long, cordate at the base, velvety on both sides, margin toothed; petiole 1-7 cm long. Young leaves often purple tinged, particularly on the margin. Flowers axillary pedunculate clusters. Calyx with 5 spine-like teeth, often dark purple, glandular. Corolla 2-lipped, mauve with dark purple lines at the base of the broad 2-lobed upper lip.

Native to Central America. Introduced in many tropical areas of the world