8 
III USTRATIONS 
Fig. 20. A sample of the pollen that is produced by the perfect hermaphro¬ 
ditic hybrid vines of Vinifera-Rotundifolia parentage. Notice the compara¬ 
tively few, about 14.4 per cent, normal pollen grains marked with an arrow. 
Magnified 230 diameters. 
Fig. 21. A leaf and a fruit-cluster, from a Vinifera-Rotundifolia hybrid 
vine (Malaga Seedling No. 1 X G-52). Notice the small fruit-cluster which 
is characteristic of the Rotundifolia species. Natural size. 
Fig. 22. Seeds from the parent vines and from one of the hybrid vines. 
Malaga Seedling No. 1 (female), G-52 (male). The general outline and 
appearance of these hybrid seeds are largely determined by the Rotundifolia 
species. Natural size. 
Fig. 23. A leafy shoot from a Rotundifolia-Vinifera hybrid vine (Oberlin 
vine as female and Malaga as male). Neither of the parent vines has 
a decidedly lobed leaf. Reduced. 
Fig. 24. A hybrid seedling (in a three-inch flower pot) of Oberlin vine 
when crossed with pollen from Malaga. The leaves of this vine are more 
like Rotundifolia than are those of the preceding. This vine is beginning 
the second year of its existence. Reduced. 
Fig. 25. An F x hybrid between V. cordifolia (female) and V. rotundifolia 
(male), 1918. Two existing vines of this type are the first hybrids to be 
recorded between these two species of grapes. The character of the growth 
is very much that of the female parent species. Reduced. 
Fig. 26. An F x hybrid vine between V. labrusca, var. Concord (female) 
and V. rotundifolia, G-52 (male). The vine is in a three-inch flower pot and 
going on to its second year of growth. Notice the two simple tendrils. A bifid 
tendril is on the other side of the vine but not visible. Reduced. 
Fig. 27. An F x hybrid vine between V. aestivalis (female) and V. rotundi¬ 
folia, G-52 (male). This vine has been grown from seed that germinated in 
March of 1919. The Rotundifolia leaf characters are plainly visible in this 
vine. Reduced. 
Fig. 2S. Leafy shoots from six of Munson’s so-called “false hybrids.” 
Reading from left to right they are: (1) Sanalba, (2) Labama, (3) LaSalle, 
(4) San Jacinto, (5) San Melaska, (6) Sanmonta. Notice that all the char¬ 
acters of the tendrils, shoots and leaves are those of true Rotundifolia vines. 
Reduced. 
Fig. 29. Selected shoots from a Rotundifolia vine, variety Scuppernong. 
Notice that many of the tendrils are bifid. Reduced. 
Fig. 30. Selected shoots from Rotundifolia seedling vines, showing varia¬ 
tions. Leaves of upper shoots show a decided tendency toward lobing while 
the tendrils of the lower shoots show that all tendrils on Rotundifolia vines 
are not simple. Reduced. 
Fig. 31. Selected shoots of a Rotundifolia vine showing that even trifid 
tendrils may be found within this species. This trifid tendril was first found 
on a wild (Oberlin) vine and later has been transmitted to a number of its 
progeny. Reduced. 
Fig. 32. A photograph of a branch of a Luola vine (V. rotundifolia), show¬ 
ing that fairly large clusters of fruit may be produced on Rotundifolia vines. 
Reduced. 
Fig. 33. Two clusters of fruit from a Rotundifolia (Oberlin) vine which 
shows that all Rotundifolia fruit-clusters are not small. Natural size. 
