28 FLORIDA GEOLOGICAL SURVEY-NINTH ANNUAL REPORT. 
this continent and Europe. The modern species are mostly Indo- 
Malayan and the only North American species, except for the nat¬ 
uralized Zizyphus vulgaris, is the Texas Buckthorn Zizyphus obtusi- 
folia (Hooker) A. Gray, a western arid species, which is found 
from West Texas to Arizona. 
What appears to be the same species as the Vero form was 
recorded some years ago from the late Pleistocene (Talbot forma¬ 
tion) of New Jersey (i) and indicates the probable abundance of a 
new element in the Pleistocene flora of southeastern North America, 
one that has only recently become extinct. 
FAMILY VITACEAE. 
GENUS VITIS LINN. 
VITIS CF ROTUNDIFOLIA MICHX. MUSCADINE GRAPE. 
Large stout simple tendrils, together with fragments of stems, 
undoubtedly represent this species in the Vero deposits. The mod¬ 
ern representatives inhabit sandy swamp borders and thickets from 
Maryland to Florida and Texas and are still common at Vero. 
VITIS SP. 
The Vero deposits have yielded 5 characteristic grape seeds 
which are not those of the preceding species, and which represent 
either Vitis austrina Small of the northern peninsula or Vitis cor- 
iacea Shuttlw of the West Indies and southern Florida. 
ORDER THYMELEALES. 
FAMILY LAURACEAE. 
GENUS BENZOIN FABR. 
BENZOIN CF MELISSAEFOLIUM (WALT.) NEES. SPICE BUSH. 
This species is represented in the Vero deposits by drupes which 
are not certainly identified because of their immaturity. It is cer¬ 
tain, however, that they represent this genus, which in the existing 
flora is not recorded nearer Vero than the West Florida region. 
(1) Berry, E. W., Torreya, vol. 10, p. 266, 1910. 
