746 



TREES OF NORTH AMERICA 



Tilia heterophylla var. Michauxii Sarg. 

 Tilia Michauxii Nutt. 



Leaves ovate to ovate-oblong, acute or abruptly short-pointed at the broad apex, cor- 

 date, obliquely cordate, or rarely obliquely truncate at base, and coarsely serrate with 

 apiculate teeth, pubescent above when they unfold with caducous fascicled hairs, and 

 hoary-tomentose beneath, and at maturity thin, dark green and lustrous on the upper sur- 

 face and coated below with short white or grayish white tomentum, 3^'-6' long and 3^'-5' 

 wide, with a slender yellow midrib and primary veins usually without axillary tufts; 

 petioles slender, sparingly villose when they first appear, soon glabrous, \%'-%\' in length. 

 Flowers |' long, opening about the 1st of July, on slender puberulous pedicels |' in length, 

 in wide long-stemmed puberulous cymes; peduncle pubescent, becoming glabrous, the free 

 portion If '-2' in length, its bract obovoid, rounded or acute at apex, 3'-5' long and 

 \'-\' ,wide, decurrent to within |' f' of the base of the peduncle; sepals ovate, acumi- 

 nate, ciliate on the margins, puberulous on the outer surface, tomentose on the inner sur- 

 face, \' long, shorter than the lanceolate acuminate petals; staminodia oblong-obovoid, 

 rounded or emarginate at apex; style glabrous. Fruit ripening in September, subglobose, 

 rusty-tomentose, \'-\' in diameter. 



A large tree with slender glabrous light red-brown branchlets. Winter-buds ovoid, 

 acute, slightly flattened, red, about \' in length. Bark of the trunk 1' thick, deeply fur- 

 rowed, reddish or grayish brown and covered with small thin scales. 



Distribution. Pennsylvania, valley of the Susquehanna River (Lancaster County) to 



Fig. 672 



southern and western New York and through southern Ohio, Indiana, and Illinois to 

 northeastern Missouri (near Ilasco, Rails County), and southward through eastern Ken- 

 tucky and Tennessee to northeastern Mississippi, and along the Appalachian Mountains 

 to northern Georgia; southern Georgia (Dougherty and Decatur Counties), Dallas County, 

 Alabama; southwestern Missouri (Eagle Rock, Barry County), and northwestern Arkansas 

 (Eureka Springs, Carroll County, and Cotter, Marion County). 



