Cedronella is a genus of flowering plants in the mint family (Lamiaceae), placed in the tribe Mentheae within the order Lamiales. It is a monotypic genus containing a single species, Cedronella canariensis. The plant is a perennial herb growing 1 to 1.5 m tall, notable among mints for its compound leaves, each consisting of three leaflets — a trait unusual in the Lamiaceae, where leaves are typically simple. The leafy stems terminate in dense, short spikes of tubular, two-lipped flowers in white or pink. Common names include Canary Islands-balm, Canary balm, and Balm-of-Gilead.
Etymology
The genus name Cedronella is a diminutive of Cedrus (cedar), alluding to a vaguely similar resinous scent of the foliage. Despite the name, the herb has no botanical connection to true cedars.
Distribution
Cedronella is native to Macaronesia, occurring naturally in the Canary Islands, the Azores, and Madeira. It has become naturalised in several regions outside its native range, including South Africa, St. Helena, New Zealand, and California.
Cultivation
In mild climates, Cedronella canariensis is grown outdoors in a sunny position with moist, well-drained soil. In cooler regions it is suited to a sunny conservatory. The plant appreciates free watering during the growing season and is propagated from seed or from cuttings.
Taxonomy Notes
Cedronella is a monotypic genus in the tribe Mentheae (Lamiaceae). Its single species, Cedronella canariensis, is distinguished within the mint family by its compound trifoliate leaves, a morphological feature atypical of Lamiaceae, which mostly bear simple leaves.
