Photograph Description and comments
Silphium integrifolium

8/4/2007 Silphium integrifolium flowering.
4/05/2010 Silphium integrifolium emerging. Leaves opposite (paired) and stalkless.
5/06/2010 Silphium integrifolium leaves opening, stem extending. Leaves opposite and stalkless.
5/06/2010 Silphium integrifolium close up of topside of leaf. Leaves stalkless. Leaf margin barely toothed.
5/06/2010 Silphium integrifolium close up of underside of leaf.


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