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Slender Threeseed Mercury (Acalypha gracilens A. Gray)

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Slender Threeseed Mercury
Photo © Bonnie Semmling, CC BY 4.0.


An annual native mostly to the southeastern US.

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Rhomboid Mercury (Acalypha rhomboidea)
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Virginia Threeseed Mercury (Acalypha virginica)
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Found in

Relative to Acalypha rhomboidea and Acalypha gracilens, this species has a greater tolerance of sandy soils, and a stronger preference for habitats that experience regular fire.

Life Cycle

This species is an annual. In most of its range, it dies down for the winter, but in southern Florida it can complete its life cycle opportunistically at any time of year.

More so than other Acalypha sp. this species establishes a deep, robust taproot, and has a lower total leaf surface area, enabling it to withstand hot, dry conditions in sandy soils.

Acalypha gracilens (Slender Threeseed Mercury) | USDA PLANTS Database (About This Site)

Acalypha gracilens | Go Botany (About This Site)

Acalypha gracilens | Biota of North America Project (BONAP) (About This Site)

Acalypha gracilens | NatureServe Explorer (About This Site)

Acalypha gracilens | Flora of North America (About This Site)

Acalypha gracilens | Missouri Plants (About This Site)

Slender Three-seeded Mercury | Maryland Biodiversity Project (About This Site)

Photo gallery

Photo © Christopher Warneke, Public Domain.
Photo © Evan M. Raskin, CC BY 4.0.
Photo © Bonnie Semmling, CC BY 4.0.
Photo © Abby Darrah, CC BY 4.0.
Photo © Evan M. Raskin, CC BY 4.0.
Photo © Jay Horn, CC BY 4.0.
Photo © Amber M. King, CC BY 4.0.