water arum

plant

Also known as: Calla palustris, arum lily, wild calla

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July 15, 2026

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The water arum, scientifically known as Calla palustris, is an aquatic plant found in wet areas of cool, temperate, and subarctic regions. It is characterized by its heart-shaped leaves, attractive white floral leaves (spathes), and bright red berries. The juice of this plant is poisonous.1

The term "calla" also commonly refers to species within the Zantedeschia genus, often called calla lilies. These plants are native to South Africa and include the popular florist's calla (Z. aethiopica).1

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calla
…known as the arum lily, water arum, or wild calla. It occurs widely in wet places in cool north temperate and subarctic regions and grows readily in mud or shallow water along pond edges or watercourses. A handsome plant, it has heart-shaped leaves, showy white floral leaves (spathes), and clusters…
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…known as the arum lily, water arum, or wild calla. It occurs widely in wet places in cool north temperate and subarctic regions and grows readily in mud or shallow water along pond edges or watercourses. A handsome plant, it has heart-shaped leaves, showy white floral leaves (spathes), and clusters…
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plant
Unique features of plant metabolism
…range of species, including the arum lily (Araceae). Temperatures of this organ may reach 40 °C (104 °F), which also contributes to the attraction of pollinators.
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…range of species, including the arum lily (Araceae). Temperatures of this organ may reach 40 °C (104 °F), which also contributes to the attraction of pollinators.
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