STYRACE.E 825 



the 2 lower pendulous; raphe dorsal; micropyle inferior and superior. Fruit ripening in 

 the autumn, elongated, oblong or obovoid and gradually narrowed at base; skin tough, 

 separable, light green and lustrous, turning reddish brown late in the autumn; exocarp 

 indehiscent, thick, becoming dry and corky at maturity, produced into 2 or 4 broad thin 

 wings cuneate at base and rounded at apex; stone bony, cylindric, obovoid or ellipsoid, 

 gradually narrowed at base into a slender stipe inclosed in the wings, narrowed above 

 and terminating in the enlarged style protruding above the wings, usually obscurely 

 and irregularly 8-angled or sulcate, 1-4-celled. Seed solitary in each cell, elongated, 

 cylindric; seed-coat thin, light brown, lustrous, adherent to the walls of the stone, the 

 delicate inner coat attached to the copious fleshy albumen; embryo terete, axile, erect; 

 cotyledons oblong, as long as the elongated radicle turned toward the minute hilum. 



Halesia is confined to the southeastern United States. 



The generic name is in honor of Stephen Hales (1677-1761), an English clergyman, au- 

 thor of "Vegetable Staticks." 



CONSPECTUS OF THE SPECIES OF THE UNITED STATES. 



Fruit 4-winged; flowers fascicled; corolla slightly lobed. 

 Fruit oblong to slightly obovoid. 



Flow y ers hardly more than |' long; fruit 1|' in length. 1. H. Carolina (A, C). 



Flowers 2' long; fruit up to 2' in length. 2. H. monticola (A). 



Fruit clavate; flowers usually not more than |' long. 3. H. parviflora (C). 



Fruit 2-winged; flowers often racemose; corolla divided nearly to the base. 



4. H. diptera (C). 



1. Halesia Carolina L. 

 Mohrodendron carolinum Britt. 



Leaves elliptic to oblong-obovate, abruptly acuminate and long-pointed at apex, gradu- 

 ally narrowed and rounded or cuneate at base, and dentate with small remote callous teeth, 

 slightly pubescent or covered below when they unfold with thick hoary tomentum and 



Fig. 732 



densely stellate-pubescent above (var. mollis Perkins), and at maturity dark yellow-green 

 and glabrous on the upper surface, pale and glabrous or slightly villose below on the slender 

 yellow midrib and primary veins, 3'-4' long and l|'-2' wide, and on leading shoots up to 

 6'-7' in length; turning yellow in the autumn before falling; petioles slender, glabrous, 

 pubescent or tomentose, early in the season, becoming nearly glabrous, \'-\' in length. 



