NAME: SAWTOOTH SUNFLOWER Helianthus
grosseserratus
DESCRIPTION:
Leaf: Long-lanceolate, with slender petioles, sharply
serrate, and rough. Upper leaves are alternate and the lower are opposite.
Flower: Bright yellow blossoms, 3 to 7 cm broad, with 10 to 20 deep
yellow rays. Disks are yellow.
Present early July to early October.
Stem: Smooth stem 4-10 feet in height.
DISCUSSION:
Most abundant wild sunflower that adorns many fencerows
and ditches in late summer with elegant splashes of yellow.
DISTRIBUTION:
In Illinois this species occurs in all parts of the state
and probably in every type of prairie.
Ranges from eastern United States, especially in the True Prairie area.
IMAGES:
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COPYRIGHT:
© Copyright 2002, L&T Natural Images
and Madsion Jr. High, all rights reserved. Contact information: email at lcwik@naperville203.org or tcoutts@naperville203.org
REFERENCES:
Mohlenbroch, Robert H., and John W. Voigt. Prairie Pants of
Illinois.
Springfield, Illinois: Illinois Department of Natural Resources, 1985.
Young, Dick. Kane County Wild Plants and Natural Areas. 2nd
ed. Geneva, Il:
Kane County Illinois Forest Preserve District, 1994.
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