Zaluzianskya is a genus of around 60 species of flowering plants in the family Scrophulariaceae (figwort family), order Lamiales. The genus is endemic to Southern Africa, where its species grow across a variety of habitats from lowlands to montane slopes.
The flowers are superficially phlox-like in shape and are popularly known as "night phlox" — a name earned by the intense, sweet fragrance many species emit after dark. This fragrance is a reliable ecological cue: night-scented species are typically pollinated by long-tongued, night-flying hawk moths in the family Sphingidae, while day-active species with little scent attract specialised long-tongued flies from the families Nemestrinidae, Tabanidae, and Bombyliidae. The day-flying hummingbird hawk moths of the genus Macroglossum are also notable pollinators of many species in the genus, making Zaluzianskya a model system for research into plant–pollinator coevolution.
Until recently the genus held little horticultural prominence, but Zaluzianskya rubrostellata, with its star-shaped night-fragrant flowers, is now cultivated as an annual ornamental in gardens. The genus was named by the botanist who first described it in honour of Adam Zalužanský ze Zalužan (1558–1613), a Prague physician and author of Methodus Herbariae (1592), regarded as a forward-thinking botanist for his era.
Etymology
The genus name honours Adam Zalužanský ze Zalužan (1558–1613), a physician of Prague and author of the botanical work Methodus Herbariae (1592). He is noted as a prominently regarded botanist of his day, with taxonomic ideas considered advanced for the sixteenth century.
Distribution
Zaluzianskya is endemic to Southern Africa, where its roughly 60 species occupy a range of habitats across the region.
Ecology
The genus shows a striking pollination syndrome diversity. Species with strong evening fragrance are predominantly pollinated by night-flying hawk moths (Sphingidae); day-active species with little scent attract specialist long-tongued flies (Nemestrinidae, Tabanidae, Bombyliidae). Day-flying hummingbird hawk moths (Macroglossum spp.) also visit many species. The genus is an active subject of research on ecological and evolutionary relationships between plants and their specialist pollinators.
Cultivation
Zaluzianskya species have not historically been of major horticultural importance. Zaluzianskya rubrostellata is cultivated as an annual herbaceous ornamental valued for its night fragrance and star-shaped flowers.
