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

49. Asteraceae, the Aster Family

12. Helianthus L. -- Sunflower

1. Helianthus grosseserratus Martens -- Sawtooth sunflower


Colonial perennial 1-3 m tall; stem strigose in the inflorescence, otherwise glabrous, often purplish or glaucous. Leaf blades lanceolate to oblong-lanceolate, 10-23 cm long, 2-5 cm wide, acuminate, coarsely serrate with widely spaced teeth, cuneate to abruptly tapered at the base, scabrous on both surfaces but often more densely strigose on the paler lower surface; petioles 1-4 cm long. Involucral bracts linear-lanceolate, acuminate, strigose, sometimes ciliolate; disk 1.5-2.5 cm across; rays 2.5-4 cm long. Achenes 3-4 mm long. Aug--Oct. Wet meadows, moist prairies and stream margins; w MN, se ND, e SD, e and c NE and possibly rare in w NE and the Black Hills; (NY to Sask. s to AR and TX).

See discussion under the following.

GIF- Distribution Map

Map key


Previous Section -- Helenium autumnale L.
Return to Family -- Asteraceae - The Aster Family
Next Section -- Helianthus nuttallii T. & G. -- Nuttall's sunflower

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/hgro.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:43:29 EST
Menlo Park, CA [caww55]