Ill 



Quercus Muhlenhergii Engelm. Noted in Pennsylvania Trees 

 as "found locally in the southeastern and southern parts." Has 

 been found in Beaver and Lawrence counties in the western part 

 of the State. 



Quercus prinoides Willd. Noted as "locally in the eastern, 

 southern and central parts of the state." Occurs in fine condi- 

 tion just north of Valencia, Allegheny County, where the plants 

 fruit abundantly. 



Quercus imbricaria Michx. Noted as occurring "locally west 

 of the Alleghenies as far north as Indiana County" and we have 

 found it in southern Butler County and in Clearfield County in 

 the valley of the north branch of the Susquehanna River, west 

 of Clearfield. 



Quercus ilicijolia Wang. Noted as sparse in the north-central 

 and northern parts, occurs abundantly on the uplands between 

 Clearfield and Pottersdale. 



Quercus macrocarpa Michx. Noted as "Rare or local in the 

 eastern, southern, and western parts of the state. Not reported 

 from other parts." Of this there is a specimen with characteristic 

 acorn, an old twig with battered leaves, and a flowering twig. 

 "Centre Co., June 9, 1868. Tree between Centre Furnace and 

 Thompson's Mill. J. T. R[othrock]." 



The statement that the White Oak is "Abundant throughout 

 the eastern, central, and southern parts, and rather common, at 

 least locally, in the northern and western parts," will perhaps 

 not quite suit the botanists of the southwestern sixth of the 

 state where the white oak forms the main part of the forests of 

 the uplands and hill tops over large areas. 



Morus rubra L. Noted as "Local and sparse in the eastern 

 and southern parts, occasional in the central part and rare in 

 the mountainous parts." Has been collected in Allegheny, 

 Westmoreland, and Blair counties. 



Magnolia acuminata L. Noted as "Recorded as far east as 

 Lancaster county and as far west as Forest and Allegheny 

 counties." Occurs abundantly in Erie, Crawford, Mercer, 

 Washington, and Green counties along the western boundary of 

 the state. 



