Utricularia cheiranthos
Overview
Utricularia cheiranthos is a small carnivorous plant in the bladderwort family (Lentibulariaceae), a genus renowned for its specialized underwater or soil-embedded traps that capture minute invertebrate prey. Like other bladderworts, it lacks true roots and instead relies on bladder-like structures to supplement its nutrient intake in the nutrient-poor wetland substrates it favors. This species produces slender stems and delicate, often yellow, snapdragon-like flowers that emerge above the waterline or damp soil surface, a characteristic shared with several close relatives in the genus that has earned some Utricularia species the common comparison to 'wallflowers' in floral form.
Utricularia cheiranthos is native to seasonally wet habitats in Madagascar, where it grows in marshes, damp grasslands, and the margins of temporary pools that fill during the rainy season. The species has been classified by the IUCN as Vulnerable (VU), reflecting genuine concern about its long-term persistence, though its current population trend remains unknown due to limited monitoring across its range. Madagascar's wetlands are subject to significant pressure from agricultural conversion and water management changes, and the localized, patchy nature of suitable seasonal wetland habitat makes populations of this plant inherently susceptible to disturbance.
On a more encouraging note, Madagascar has expanded its protected area network in recent decades, and several wetland and grassland reserves now fall within or near the known range of this species, offering meaningful potential for habitat safeguarding if monitoring and management efforts continue to develop. Continued botanical surveys in Madagascar's wetland ecosystems will be essential to better understand this species' true population status and to guide targeted conservation action.
Utricularia cheiranthos faces pressure primarily from the conversion of Madagascar's seasonal wetlands and damp grasslands to agricultural land, particularly rice paddies and grazing land, which alters the hydrology these plants depend on. Drainage and water diversion projects in the region further reduce the extent and reliability of the temporary pools and marshy margins the species requires for its life cycle. Because the plant occupies a narrow ecological niche tied to seasonal flooding patterns, even localized habitat modification can disproportionately affect known populations.
Habitat
This species inhabits seasonally wet marshes, damp grasslands, and the edges of temporary pools within Madagascar, relying on consistently moist to inundated substrates typical of the island's wetland ecosystems.
Other threatened species in LENTIBULARIACEAE
Threatened in Australia
Frequently asked questions
Why is Utricularia cheiranthos classified as Vulnerable?
Where does Utricularia cheiranthos live?
What are the main threats to Utricularia cheiranthos?
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