Aquatic and Wetland Vascular Plants of the Northern Great Plains
10. Urticaceae, the Nettle Family
1. Pilea Lindl. -- Clearweed2. Pilea pumila (L.) A. Gray
Very similar to P. fontana and differing mainly as follows: Plants sometimes larger, to 5 dm tall. Leaf blades to 12 cm long, 8 cm wide, thinner and more translucent than in P. fontana; petioles to 8 cm long. Achenes green, often marked with purple, 1.3-2 mm long. Late Jul--Sep. Swampy woods and wooded stream banks; occasional from e ND to c and e NE; (Que. to e ND, s to FL, LA and OK).
Previous Species -- Pilea fontana (Lunell) Rydb.
Return to Family -- Urticaceae - The Nettle Family
Next Species -- Urtica dioica L. -- Stinging nettle
