744 



TREES OF NORTH AMERICA 



A tree with slender light gray-brown often zigzag branchlets covered when they first 

 appear with fascicled hairs and deciduous during their first summer. Winter-buds ovoid, 

 obtusely pointed, terete, reddish brown, glabrous, \'-\ f long. 



Distribution. Texas, banks of Spring Creek, near Boerne, Kendall County; the var. 

 scabrida on a low limestone bluff of the Blanco River, near Blanco, Blanco County, near 

 College Station, Brazos County, and at Velasco, Brazoria County. 



12. Tilia lasioclada Sarg. 



Leaves ovate, abruptly contracted at apex into a short acuminate point, oblique and 

 truncate or on weak branchlets, often nearly symmetric and deeply cordate at base, and 

 finely serrate with straight apiculate teeth, covered above when they unfold with soft cadu- 



Fig. 670 



cous hairs and pubescent below, and at maturity thick, bright green, smooth and lustrous 

 on the upper surface, pale and covered on the lower surface with a thick floccose easily 

 detached pubescence of fascicled hairs, pale on those of lower leaves and often rufous on 

 those of up*per branches, 4'-6' long and 3j'-5' wide, with a slender midrib and veins cov- 

 ered below with straight hairs mixed with fascicled hairs, and small conspicuous axillary 

 tufts; petioles covered when they first appear with straight hairs mixed with fascicled hairs, 

 soon glabrous, usually \\'-\\' in length, those of the leaves of weak branchlets very slen- 

 der and often 2'-2|' long. Flowers in May, '-$' long, on stout villose pedicels, in long- 

 branched mostly 10-15-flowered cymes more or less thickly covered with straight white hairs ; 

 peduncle covered with long white hairs, the free portion l'-l j' in length, its bract rounded 

 and unsymmetric or acute at base, rounded or acute at apex, the midrib more or less thickly 

 covered on the lower side with straight hairs, otherwise glabrous, 3^'-5' long and 1' wide, 

 decurrent nearly to the base or to within 1' of the base of the peduncle; sepals narrow, 

 acute, pubescent on the outer surface, villose on the inner surface, about one-third as long 

 as the lanceolate acuminate petals; staminodia spatulate, rounded and often lobed at apex, 

 about as long as the sepals; style slightly villose at base. Fruit ripening in September, 

 globose or depressed-globose, covered with rusty tomentum, about f ' in diameter. 



A tree, sometimes 60 high, with a trunk 12'-24' in diameter, heavy branches forming a 

 broad round-topped head, and stout red-brown branchlets sometimes glabrous in early 

 summer and sometimes covered more or less thickly during their first and second seasons 

 with long straight hairs. 



Distribution. Valley of the Savannah River, near Abbeville, South Carolina, to Shell 

 Bluff, Burke County, Georgia; River Junction, Gadsden County, Florida. 



