Arboretum
"A man does not plant a tree for himself, he plants it for posterity." - Alexander Smith   
Bur Oak
(Quercus macrocarpa)

Donated by Dee Boswell
Tree Map Location: # 205
In Honor of The Kaskaskia College ROTARACT Club 2009

Bur Oak tree Bur Oak twig Bur Oak leaf Bur Oak flower Bur Oak fruit


Leaf: Alternate, simple, 6 to 12 inches long, roughly obovate in shape, with many lobes. The two middle sinuses nearly reach the midrib dividing leaf nearly in half. The lobes near the tip resemble a crown, green above and paler, fuzzy below.  
Flower: Monoecious; male flowers are yellow-green, borne in long, drooping slender catkins, 2 to 4 inches long; female flowers are green tinged in red and appear as single, short spikes, both appear shortly after the leaves.  
Fruit: Acorns are quite large (1 1/2 inches long) and 1/2 enclosed in a warty cap that has a long-fringed margin, maturing in one growing season in late summer and fall.  
Twig: Quite stout, yellow-brown, often with corky ridges; multiple terminal buds are small, round, and may be somewhat pubescent often surrounded by thread-like stipules; laterals are similar, but smaller.  
Bark: Ashy gray to brown in color and quite scaly, but noticeably ridged vertically on large trees. Form: A large tree that often reaches over 100 feet tall with a long clear bole. In the open it becomes a very wide, spreading tree.  
Form: A large tree that often reaches over 100 feet tall with a long clear bole. In the open it becomes a very wide, spreading tree.  
Source: College of Natural Resource Virginia Polytechnic Institute and State University  
Website: http://www.cnr.vt.edu/dendro

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Office of Institutional Advancement
618-545-3069
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