Trees of Wisconsin
Quercus rubra L.
rubra leaves are simple and alternate with sharp-pointed, shallow
lobes. Click here to compare the leaves
of our 6 commonest species of oaks (but be warned that there is considerable
variation in each species). The acorns of Q. rubra are the largest
of our oaks and the buds are also the largest. The acorn cap is very shallow
and broad. The smooth bark of twigs begins to split into shiny
sections as the trunks grow, until they are thoroughly
fissured at maturity.
Quercus rubra ranges from the maritime provinces of Canada to Georgia and west to Arkansas and Minnesota. It is distributed throughout Wisconsin. It tolerates more shade than our other oaks and is sometimes an important component of upland deciduous forests.