252 Muhlenberg's observations on the 



This tree is frequently dwarfish and stunted, when 

 it is called Grund-Eiche (ground oak.)* 



3. S$uercus alba palustris is a genuine species, but 

 very subject to vary. Leaves wedge-shaped below, 

 denticulated, under surface tomentose; often ap- 

 proaching very near to those of the white oak. 

 This species is easily distinguished from others by 

 its acorn having a very long foot-stalk, and the 

 scales of the cup being almost prickly. In this 

 neighbourhood it is called swamp white oak.f 



There is a variety of this species that never 



* Qucrcus stellata : foliis oblotigis sinuatis subtus pubescentibus, lobis 

 obtusis, superioribus bilobis. W. 



This is Q^obtusiloba of Mich auk (N. I. PI. I.) who gives its spe- 

 cific character as follows: 



^. obtusiloba: foliis subtomentosis profunde sinuato lobatis, lobis retusis, 

 basi acute cuneata; fructu mediocri, cupula craterata, glande brevi 

 ovata T. 



fit is new and as yet undescribed. I call it Qucreus hicohr : foliis 

 oblongis subsinuatis subtus tomentosis, lobis obtusis apice callosis. 



] -eaves more or less sinuate, sometimes coarsely toothed only; the 

 middle rib of each lobe projecting over its blunt point, and forming a 

 cartilaginous projection. The lower surface of the leaves is constantly 

 clothed with a white cotton. W. 



This appears to be C^_ lyrata of Walter, figured (Fl. 4 ) by 

 Mich a u x, who defines it thus : 



<5. .lyrata : foliis subsessilibus glabris lyrato sinuosis, summitate dila- 

 tata divaricato-triloba, lobis acutangulis, terminali tricuspide : cupula 

 depresso-^lobosa, muricato-scabrata ; glande subtecta. T. 



