Quercus macrocarpa (bur oak), emerging catkins and leaves (3.47291)
Date: February 1967Creator: Blaha, M.
Type: Photographic image
Description:Quercus macrocarpa (bur oak), closeup detail of emerging catkins and leaves at tip of brown twig
Extent: 1 slide
Alnus B. Ehrh. (alder), base of trunk (3.83295)
Date: March 9 1956Type: Photographic image
Description:Alnus B. Ehrh. (alder) base of tree, upper part of roots, bark
Extent: 1 slide
Alnus B. Ehrh. (alder), catkins (3.83296)
Date: March 1956Type: Photographic image
Description:Alnus B. Ehrh. (alder), male catkins, not yet ripe
Extent: 1 slide
Alnus B. Ehrh. (alder), catkins and fruits (3.83297)
Date: March 1956Type: Photographic image
Description:Alnus B. Ehrh. (alder), new male catkins and last year's fruits
Extent: 1 slide
Alnus B. Ehrh. (alder), catkins and fruits (3.83298)
Date: March 1956Type: Photographic image
Description:Alnus B. Ehrh. (alder), new male catkins and last year's fruits
Extent: 1 slide