Family: Urticaceae
Canadian clearweed
Paul Drobot
University of Wisconsin - Madison (WIS-VP)
Etymology: Pilea: for shape of larger sepal in fertile flower in original species which partly covers achene, like the pileus or "felt cap," of the Romans
Plants: erect, annual, 4"-20" tall, smooth forb with no stinging hairs; stems translucent; often forming colonies
Leaves: long-stalked, opposite, shiny, slightly transparent, with 3 main parallel veins
Flowers: green, 3- to 4-parted, 1/8" wide; inflorescence branched clusters from the middle and upper leaf axils; blooms July-Sept.
Fruits: oval dry, yellowish to pale green seed with purple edges
Habitat: shaded; moist; woods; in rich soil
Conservation Status: Native
Plants: erect, annual, 4"-20" tall, smooth forb with no stinging hairs; stems translucent; often forming colonies
Leaves: long-stalked, opposite, shiny, slightly transparent, with 3 main parallel veins
Flowers: green, 3- to 4-parted, 1/8" wide; inflorescence branched clusters from the middle and upper leaf axils; blooms July-Sept.
Fruits: oval dry, yellowish to pale green seed with purple edges
Habitat: shaded; moist; woods; in rich soil
Conservation Status: Native
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 3, Wetland Indicator = FACW USDA Plants Database: Federal Distribution and detailed information including photos USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"
Paul Drobot
Robert W. Freckmann
Merel R. Black
Emmet J. Judziewicz
Hugh H. Iltis
Merel R. Black
Paul Drobot
Christopher Noll
Hugh H. Iltis