Quesnelia is a genus of flowering plants belonging to the family Bromeliaceae, subfamily Bromelioideae — the same subfamily that includes familiar ornamentals such as neoregelia and billbergia. The genus comprises approximately 22–24 accepted species, all endemic to eastern Brazil, making it one of the more geographically concentrated bromelioid genera.
Plants in this genus are epiphytic or terrestrial bromeliads that form rosettes of stiff, often spiny-margined leaves. The inflorescence is typically a compact spike or raceme, frequently enclosed within colorful bracts, and produces tubular flowers in shades of red, orange, blue, or purple depending on the species. Several species, including Quesnelia testudo and Quesnelia marmorata, are cultivated as ornamental houseplants and conservatory specimens for their striking foliage and floral display.
The genus is divided into two subgenera: the nominate subgenus Quesnelia and Billbergiopsis Mez. It was established to honor Edouard Prosper Quesnel (1781–1850), a French businessman from Le Havre who was a patron of botany.
Etymology
The genus name Quesnelia honors Edouard Prosper Quesnel (1781–1850), a French merchant and patron of botany based in Le Havre, France.
Distribution
All species are endemic to eastern Brazil, making Quesnelia one of the more geographically restricted genera in the family Bromeliaceae.
Cultivation
Several species, notably Q. testudo, Q. marmorata, and Q. arvensis, are grown as ornamental bromeliads in temperate greenhouses and as houseplants. They generally prefer bright indirect light, free-draining growing media, and regular watering of the central leaf cup ("tank") — typical care for tank bromeliads in subfamily Bromelioideae.
