USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

Aquatic and Wetland Vascular Plants of the Northern Great Plains

10. Urticaceae, the Nettle Family

1. Pilea Lindl. -- Clearweed

1. Pilea fontana (Lunell) Rydb.


Plants 1-4 dm tall, often decumbent. Leaf blades mostly 1.5-6 cm long, 1-4 cm wide; petioles mostly 0.5-5 cm long. Flower clusters spreading 0.5-5 cm from the stem, the male flowers usually innermost in the clusters when mixed with female flowers. Achenes dark olivaceous to nearly black with a narrow pale margin, 1.3-2 mm long, the persistent sepals shorter than to slightly exceeding the achene. Late Jul--Sep. Cold springs, seeps and boggy places; uncommon and scattered, mainly in ND and SD; (P.E.I. to ND, s to VA and FL, IN and NE).
GIF-Pilea fontana
Pilea fontana
GIF- Distribution Map

Map key


Return to Family -- Urticaceae - The Nettle Family
Next Species -- Pilea pumila (L.) A. Gra

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/plants/vascplnt/species/pilefont.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:45:28 EST
Sioux Falls, SD [sdww54]