Sanchezia is a genus of approximately 45 species of flowering shrubs, and occasionally small trees or herbs, placed in the family Acanthaceae within the order Lamiales. The genus is native to the tropical lowlands of South and Central America, where its members grow in warm, humid conditions. Plants are noted for their showy ornamental qualities: large, tubular flowers are typically borne in dense, brightly coloured inflorescences subtended by prominent bracts, and some species also feature boldly veined or variegated leaves that add year-round visual interest. A morphologically similar close relative is the genus Suessenguthia.
Because of their striking appearance, several species have long been grown as ornamentals throughout the tropics and in botanical gardens in temperate regions. Species widely known from cultivation include Sanchezia speciosa, S. nobilis, and S. parvibracteata. In some regions where ornamental species have been introduced, they have naturalised and become problematic invasive weeds. In contrast, S. lampra, endemic to Ecuador, is considered almost extinct in the wild, illustrating the range of conservation statuses across the genus.
Etymology
The genus name Sanchezia honours José Sánchez, a nineteenth-century professor of botany at Cádiz, Spain.
Distribution
Sanchezia is native to the tropical lowlands of South and Central America. Several species have been widely introduced as ornamentals in the broader tropics, and some have naturalised in those regions.
Cultivation
Multiple species of Sanchezia — particularly S. speciosa, S. nobilis, and S. parvibracteata — are cultivated as ornamental shrubs throughout the tropics and in the heated glasshouses of temperate botanical gardens. Their appeal lies in their colourful bracts, tubular flowers, and, in some species, attractively veined foliage. In areas outside their native range, some ornamental species have escaped cultivation and become invasive.
Conservation
Sanchezia lampra, endemic to Ecuador, is noted as being almost extinct. Conversely, some introduced ornamental species have become invasive weeds in parts of their non-native range.
