[Next]  [Previous]   [Floral Formula]  [Lecture Text]

Asteraceae

 9-Helianthus young fruits

[FMP-field: image]
This is a longitudinal section of a head that is past flowering. The ray flowers have shriveled, and the ovaries of the disk flowers are maturing into achenes; this example is Helianthus angustifolius.
Photo by K. R. Robertson of plants cultivated at the Illinois Natural History Survey.
[Next]  [Previous]   [Floral Formula]  [Lecture Text]