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Asteraceae

 6-Helianthus head l.s.

[FMP-field: image]
The head is usually surrounded by phyllaries, which are bracts. Observe the ray and disk flowers. This example is Helianthus angustifolius. NOTE: The use of the word "receptacle" in the above image is technically not correct, as a true receptacle is part of a flower, while in this instance it is used for the base of an inflorescence.
Photo by K. R. Robertson of plants cultivated at the Illinois Natural History Survey.
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