828 Wisconsin Academy of Sciences, Arts, and Letters. 
densely puberulent, chestnut-colored scales of the acorn 
cup in this species are characteristic, separating it from 
Q. coccinea in which the scales are usually closely ap- 
pressed. 
290. Quercus ellipsoidalis, E. J. Hill. (Bot. Gaz. 27: 05, 
1899.) 
Common; with the two preceding. This is doubtless 
the oak which Dr. Lapham mistook for Q. palustris, and 
on whose authority it has been accredited to the Wis¬ 
consin Flora these many years. It is a matter of much 
doubt whether Q. palustris occurs in Wisconsin, Prof. 
Cheney never having met with it in his work on the 
trees of the State. 
Q. ellipsoidalis resembles Q. palustris in that as the 
branches often come low down, they are apt to die as 
the trees grow older, and, breaking off a short distance 
above their base, leave stubs along the trunk, so char¬ 
acteristic of Q. palustris. It is quite unlike the latter, 
however, in the form and size of nut and acorn-cup. In 
the form of its acorns it is nearest Q. coccinea, but un¬ 
like the latter, its leaves do not turn scarlet in autumn, 
but rather a yellowish to pale brown. 
291. Quercus alba, L. White Oak. 
Common; woods and fields, in various soils. 
292. Quercus macrocarpa, Michx. Burr Oak. 
Common; forming the burr-oak openings, so common 
in Southern Wisconsin. 
293. Quercus bicolor, Willd. Swamp White Oak. 
Rare; a few trees still remain, about a half mile 
north of Racine City limits. 
294. Quercus Muhlenbergii, Engelm. Chestnut Oak. 
Rare; occurs on the little island and peninsula in 
Brown’s Lake, near Burlington, Racine Co. The only 
station. 
U rti c aceje . Nettle Family. 
295. Ulmus Americana, L. American Elm. 
Common; woods and along streams. One of our 
handsomest trees. 
