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Rhaponticum centauroides; Knapweed   (view details)   

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Using this photo   This photo and associated text may not be used except with express written permission from Dr.Thomas K. Voekler. To obtain permission for personal, academic, commercial, or other uses, or to inquire about high resolution images, prints, fees, or licensing, or if you have other questions, contact Dr.Thomas K. Voekler thomasvoekler_NO_SPAM@aol.com. (Remove "_NO_SPAM" from this email address before sending an email.)

Rhaponticum centauroides
©2011 Dr.Thomas K. Voekler

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