File:Alnus incana rugosa catkin.jpg

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Alnus incana (L.) Moench ssp. rugosa (Du Roi) Clausen; Family: Betulaceae

English: Alnus incana ssp. rugosa — Speckled Alder.
  • Picture of catkin (male inflorescence.)
Author Kenneth Dritz. USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester, PA. Courtesy of USDA NRCS Wetland Science Institute.


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This image or file is a work of a United States Department of Agriculture employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

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Alnus incana

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current16:06, 21 July 2007Thumbnail for version as of 16:06, 21 July 20071,160 × 1,650 (602 KB)Tintazul (talk | contribs) {{Tintazul|Description=''Alnus incana'' (L.) Moench ssp. ''rugosa'' (Du Roi) Clausen{{en|Speckled Alder. Family Betulaceae. Picture of catkin (male inflorescence.)}} |Source= |Dat
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