 EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes
and phenomena which shape our planet and our lives. EPOD will collect and
archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.


 Cottonwood Trees

   July 15, 2021


    Roger_20210503_200210

   Photographer: Roger Hopkins:[ Roger@naturalhighs.net]
   Summary Author: Roger Hopkins:[ Roger@naturalhighs.net]

   These two stately Eastern Cottonwood trees ( Populus deltoides) were
   photographed in southwest Colorado.  Mesa Verde National Park can be
   seen in the background.
   The left tree is a male, and the right tree is a female. So for a few
   days during spring, the tree on the left has red catkins, while the one
   on the right has green catkins. Once  pollinated, the  catkins on
   the male will fall off while the ones on the female will develop into
   seed capsules with tiny seeds attached to cotton-like strands. When
   released in early summer, the seeds give the species its common name.
   After these trees are leafed out and the seeds are shed, there’s no
   visible difference between the sexes. Nor can any such difference be
   detected once the leaves fall. Photo taken on May 3, 2021.
     * Dolores, Colorado Coordinates: 37.4739, -108.5045

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Plant Links

     *  Discover Life
     *  Tree Encyclopedia
     *  What are Phytoplankton?
     *  Encyclopedia of Life - What is a Plant?
     *  USDA Plants Database
     *  University of Texas Native Plant Database
     *  Plants in Motion
     *  What Tree is It?

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   Earth Science Picture of the Day is a service of the  Universities
   Space Research Association.

https://epod.usra.edu
 
