Quercus rubra L. (northern red oak), flowers
Copyright statement:

©John Hagstrom

Copyright restrictions applying to use or reproduction of this image are available from the Sterling Morton Library, The Morton Arboretum. For more information, please visit our ABOUT section or complete and submit this form.

Quercus rubra L. (northern red oak), flowers


3.74064
digital color photograph 
Born digital
Photographic image
2005 – 2012
Quercus rubra L. (northern red oak), flowers typical of the genus quercus in all species.
Monoecious, appearing on old or new growth; staminate catkins pendent, clustered; individual flowers comprising a 4- to 7-lobed calyx which encloses 6 stamens, (rarely 6-12); pistillate flowers solitary or in few to many-flowered spikes from the axils of the new leaves; individual flowers consisting of a 6-lobed calyx surrounding a 3-celled ovary (rarely 4-5), the whole partly enclosed in an involucre.
Copyright statement:

©John Hagstrom

Copyright restrictions applying to use or reproduction of this image are available from the Sterling Morton Library, The Morton Arboretum. For more information, please visit our ABOUT section or complete and submit this form.