SILVA OF NORTH AMERICA. 
SAPINDACE. 
° . 7 . 1 . +2 
fsculus austrina grows in rich upland woods from Memphis, Tennessee,! and southern Missouri 
to eastern Texas* and northwestern Alabama.’ 
been united, in the color of the flowers, in the short broad calyx of 
some individuals, and in the pubescence which covers the under 
surface of the leaflets, differing from the Appalachian tree in its 
exserted stamens. On the other hand, it approaches 4sculus Pavia 
in the long narrow calyx of some individuals and in the exserted 
filaments, differing from it in its pubescent leaflets and more 
numerous and crowded flowers. From all the American species, 
with the exception of sculus parviflora, it differs in the color of 
its light yellow-brown seeds, which furnish the best character for 
distinguishing this tree. 
1 A. Fendler, April 13, 1851 (in Herb. Gray). 
* Butler County, G. W. Letterman, May 9, 1884. This speci- 
men has the long tubular calyx of Zsculus Pavia, but the leaves 
are very pubescent. Neeleysville, Butler County, B. F. Bush, April 
22, 1898 ; Grandin, B. F. Bush, May 6, 1901, with only slightly 
pubescent leaflets and « long tubular calyx. Arkansas: Camden, 
A. Fendler, 1850; Little Rock, G. W. Letterman, May 6, 1881 ; 
Fulton, B. F. Bush, April 4, 1900 ; W. M. Canby, B. F. Bush, and 
C. S. Sargent, April 18, 1901. 
3 Rio Guadaloupe, Berlandier, April, 1828 (Nos. 1743 and 422, 
in Herb. Gray); near Boerne, C. S. Sargent, March, 1887 ; Colum- 
bia, B. F. Bush, April 5, 1901 (No. 48). 
4 A specimen collected in 1854, at Moulton, Lawrence County, 
Alabama, and preserved in the Gray Herbarium, appears identical 
with Zsculus austrina from southern Arkansas, except in its smaller 
leaflets. 
EXPLANATION OF THE PLATE. 
Pirate DCXXII. AscuLus AvSTRINA. 
A flowering branch, natural size. 
An upper petal, natural size. 
A lateral petal, natural size. 
The end of a cluster of fruit, natural size. 
1. 
2. 
3. 
4. A stamen, natural size. 
5. 
6. 
A nut, natural size. 
