Helianthus annuus

Common in the northeastern part of the state along roadsides and the like. Similar to Helianthus petiolaris but readily distinguished by having very broad, abruplty attenuate-tipped phyllaries. My pictures are from Indiana & Oklahoma.

Pseudanthium & leaves at Black Kettle National Grassland, Oklahoma, 14 Aug 2004

Immature pseudanthium, showing phyllaries, 14 Aug 2004.

Cauline leaves, Black Kettle National Grassland, 14 Aug 2004.

A pseudanthium in Bloomington, IN, 9/3/03.

A stem with buds in Bloomington IN, 9/3/03.

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