This is a picture of the leaves of Prairie Dock. They are approximately 1' or more in length. Very eye catching leaves among the normal roadside growth. The flowers are born at the ends of the stalks seen mixed among the leaves. Photo courtesy of Dan Busemeyer of the Illinois State Natural History Survey
by thelaughingkoi Jul 18, 2003 11:52 PM
Prairie Dock (Silphium terebinthinaceum)
by Equilibrium Aug 14, 2005 10:58 PM
Prairie Dock (Silphium terebinthinaceum)
by Equilibrium Aug 14, 2005 10:58 PM
Prairie Dock (Silphium terebinthinaceum)
by Equilibrium Aug 14, 2005 10:58 PM
Prairie Dock (Silphium terebinthinaceum)
by Equilibrium Aug 14, 2005 10:58 PM
Prairie Dock (Silphium terebinthinaceum)
by Equilibrium Aug 14, 2005 10:58 PM
Prairie Dock (Silphium terebinthinaceum)
by Equilibrium Aug 14, 2005 10:58 PM
Prairie Dock (Silphium terebinthinaceum)
by Equilibrium Aug 14, 2005 10:58 PM
Prairie Dock (Silphium terebinthinaceum) Basal Leaves
by Equilibrium Jan 18, 2006 10:51 PM
Prairie Dock (Silphium terebinthinaceum) Basal Leaves
by Equilibrium Jan 15, 2006 10:31 PM
Denver Botanic Gardens 09/01/09.
by plutodrive Sep 14, 2009 11:00 PM
Denver Botanic Gardens 09/01/09.
by plutodrive Sep 14, 2009 11:00 PM
Denver Botanic Gardens 09/01/09.
by plutodrive Sep 14, 2009 11:00 PM
Such a fun & magnificent perennial Sunflower. Why? Cause it’s so tall and vertical, has such large & beautiful leaves.
by AnniesAnnuals Sep 6, 2011 1:37 PM
7-2011 *Matthaei Botanical Gardens, Ann Arbor, MI
by DaylilySLP Apr 27, 2012 1:09 PM
7-2011 *Matthaei Botanical Gardens, Ann Arbor, MI
by DaylilySLP Apr 27, 2012 1:10 PM
7-2011 *Matthaei Botanical Gardens, Ann Arbor, MI
by DaylilySLP Apr 27, 2012 1:10 PM
7-2011 *Matthaei Botanical Gardens, Ann Arbor, MI
by DaylilySLP Apr 27, 2012 1:10 PM
