Adenocarpus is a genus of flowering shrubs in the family Fabaceae (legumes), subfamily Faboideae, described by Augustin Pyramus de Candolle in 1815. The genus comprises roughly 15–20 species of broom-like shrubs bearing clusters of vivid yellow flowers and trifoliate leaves, closely resembling other papilionoid brooms such as Cytisus and Genista. Like many legumes, the plants fix atmospheric nitrogen through root nodules, enabling them to colonize poor, dry soils.
The genus is centered on the western Mediterranean Basin and sub-Saharan Africa, with its greatest species diversity concentrated in Northwest Africa — particularly Morocco, Algeria, and the Canary Islands — and the Iberian Peninsula. Several species are endemic to oceanic islands: Adenocarpus viscosus and A. foliolosus are restricted to the Canary Islands, where they are characteristic components of the laurisilva and Macaronesian heath zones. Other species extend into sub-Saharan Africa and as far east as Italy and southern France.
Distribution
Adenocarpus is native to the Mediterranean Basin and sub-Saharan Africa, with the highest concentration of species in Northwest Africa (Morocco and Algeria) and the Iberian Peninsula. Several species are endemic to the Canary Islands, where they occur in laurisilva and heath habitats.
Taxonomy Notes
The genus was described by Augustin Pyramus de Candolle in Flore Française, 3rd edition (1815). It belongs to the tribe Genisteae within subfamily Faboideae (Fabaceae). Some authorities have treated the family under the name Leguminosae; GBIF's taxonomic backbone places the genus in Fabaceae, order Fabales.
