ID#: 8796
Caption:
Magnified 6486X, this 2006 scanning electron microscopic (SEM) image depicted ultrastructural details on the surface of a dandelion clock, from a common dandelion, Taraxacum officinale. The clock is the filamentous puffball of seeds arranged, so as to be easily dispersed by the wind, or the breath of a curious child. In this field of view the remnants of a seed attachment is visible, as a small nub protruding from a small papule. It is from these nub-like points that the parachute-equipped seeds detach, and are blown away, sometime over a distance of miles. Note that this is the sixth in a series of PHIL images, 8791-8796, in which the magnification is increased, thereby, providing greater and greater morphologic detail of the point of the developing seed attachment.
High Resolution: Click here for hi-resolution image (5.48 MB)
Content Provider(s): CDC/ Janice Haney Carr
Creation Date: 2006
Photo Credit: Janice Haney Carr
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Copyright Restrictions: Permission is not required for public domain images, however, these images are provided by CDC and are available for personal, professional, and educational use with appropriate attribution. Redistribution must credit CDC and, where known, the individual photographer, and identify the CDC website as the free source. For additional terms see Use of Agency Materials | Other | CDC