672 



TREES OF NORTH AMERICA 



Distribution. Rich often moist soil, formerly often in mostly pure forests; 

 northern New Brunswick to the eastern shores of Lake Superior, and northeastward 

 to the southern shores of Lake Winnipeg and the valley of the Assiniboine River, 

 and south in the United States to Virginia, along the Appalachian Mountains to 

 Georgia and Alabama, and to eastern Dakota, eastern Nebraska, Kansas, the Indian 

 Territory, and eastern Texas; more common northward than southward, and of its 

 largest size on the bottom-lands of the tributaries of the lower Ohio River. 



Often cultivated as a shade and ornamental tree in the northeastern states, and 

 occasionally in Europe. * 



2. Tilia australis. Small. Linden. 



Leaves ovate, abruptly acuminate at the apex, mostly cordate by a broad shallow 

 sinus at the oblique base, sharply serrate, with prominently glandular teeth, thin, 

 dark green and lustrous above, glaucous beneath, sparingly hairy while young on the 



under side of the slender midribs and in the axils of the thin primary veins, becom- 

 ing glabrous, 4'-6' long, 3^'-4' wide ; their petioles slender, 2'-3' in length. Flowers : 

 pedunculate bract decurrent nearly to the base of the peduncle, glaucous, glabrous, 

 about 3^' long and ^ wide; peduncle slender, glabrous, the free portion about 1^' 

 long; pedicels glabrous, about \' in length; sepals narrowly ovate to ovate-lanceolate, 

 hoary-tomentose along the margins on the inner surface and toward the apex on the 

 outer surface, about \' long and one third shorter than the lanceolate petals; stam- 

 inodia entire. Fruit not seen. 



A tree, sometimes 60 high. 



Distribution. Rich wooded hillsides at elevations of 800 above the sea on 

 Warnock Mountain, Blount County, Alabama (C Mohr, 1895); still little known. 



3. Tilia Floridana, Small. Linden. 



Leaves ovate or ovate-oval, abruptly narrowed and acuminate at the apex, mostly 

 obliquely truncate or unequally cuneate at the base, remotely crenulate-serrate, 

 with glandular teeth, dark green above, pale below, glabrous with the exception 

 of minute tufts of brownish hairs in the axils of the slender veins beneath, 4'-6' 

 long, 3'-3y wide, their petioles 1^-1^' in length. Flowers ; pedunculate bract 

 decurrent to within \'~\' of the base of the peduncle, puberulous, 3'-4' long, f '-1' 



