Etymology: Calla: ancient name, meaning obscure
Plants: erect, perennial, emergent, semi-aquatic 5"-10" tall; roots fleshy rhizomes
Leaves: broadly oval with a pointed tip on a 2"-6" long stalk
Flowers: green to white, tiny, 6 stamens; inflorescence a 1"-2" spadix covered with flowers and beside a 2" white, open, flat, oval spathe; blooms June
Fruits: round cluster of red berries
Habitat: bogs, shallows, cold water; in peaty, mucky soil
Hazardous: Careful, this plant is hazardous!
Conservation Status: Native
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 9, Wetland Indicator = OBL USDA Plants Database: Federal Distribution and detailed information including photos USGS - Northern Prairie Wildlife Research Center: Wetland Plants and Plant Communities of Minnesota and Wisconsin USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc.