112 Bulletin of flic University of Texas 



2 or o. Fruit variously colored, oblong to subglobose, sour, 

 with flattened wrinkled stone. 

 Arkansas, Louisiana and Texas. 



2. Prunus Americana Marsh. A medium sized, broad 

 topped spiny tree 25-30 high with drooping branches, green 

 twigs and reddish brown branchlets. Leaves oval to obovate, 

 pointed at the apex, 3'-4' long, I 1 // wide, sharply serrate 

 with incurved teeth, smooth and yellow to dark green above, 

 paler and somewhat hairy beneath. Flowers white in clus- 

 ters of 2-5. Fruit globular to oblong, V or less long, red, with 

 juicy, acid flesh. 



New York west to Montana, south to Florida and west to 

 Texas. Cultivated for. fruit and ornament throughout its 

 range. 



3. Prunus hortulana Bailey. Wild Plum. A small low 

 branched, broad topped tree 20-25 high with thin dark 

 brown bark and reddish brown twigs. Leaves ovate-lanceo- 

 late or oval, 4'-6' long, I'-l 1 ,// wide, firm, long pointed 

 at the apex, serrate with incurved glandular teeth, smooth, 

 dark green above, paler and with hairs in the axils of primary 

 vein beneath. Flowers in 2-4 flowered lateral clusters before 

 the leaves. Fruit globular to subglobose or oval, %'-!' i n 

 diameter, red, with thin, hard, acid flesh. 



In rich moist soil. Illinois to Tennessee, Alabama, Arkansas 

 and Texas. 



PADUS Borkhausen. Wild Cherries. 



Sepals not present on fruit, leaves with slender 



teeth 1. P. Virginiana. 



Sepals present on fruit, leaves with coarse teeth. 

 Sepals broade-r than long, leaves with reticulate 



veins 2. P. eximia. 



Sepals longer than broad, leaves not reticulate 



veined 3. P. serotina. 



1. Padus Virginiana (L.) Roemer. Choke Cherry. A 

 shrub or small tree 20-25 high with spreading, drooping 

 branches, thin, smooth, dark gray bark and reddish brown 

 twi^s. Leaves ovate to obovate, 2'-4' long, l'-2' wide, thin, 





