44 JOURNAL OF THE ARNOLD ARBORETUM [vol. hi 



triangular-ovate, the sinuses or at least the two upper sinuses broad and 

 rounded reaching nearly halfway to the base, rarely shallow, dark green 

 and glabrous above, light green beneath, thinly floceose-villose over the 

 whole surface or pilose or villose only on the veins and veinlets, rarely 

 nearly glabrous at maturity; petioles 4-12 cm. long, sparingly villose or 

 pilose chiefly in the grove, or nearly glabrous. Flowers not seen. Fruit 

 in long narrow panicles without the peduncle 5-7.5 cm. long and 3-3.5 

 cm. across; berries globose or depressed-globose, 0.9-1.3 cm. in diam. 

 blue-black, bloomy, slightly acid; seeds 1-4, ovoid, 5-6 mm. long, with a 



small chalaza. 



New York: Banks of Genesee River, Seneca Park, Rochester, Augusl 

 30, 1920, B. II. Slavin and R. E. Horsey (type); September 15, 1920 

 B. II. Slavin, August 9, 1913, B. II. Slavin. 



There can be little doubt that this Grape Vine is a natural hybrid be- 

 tween V. Lecontiana House (V. bicolor Le Conte, not Raf.) and V. vul- 

 pina L., as both those species grow in the locality where Mr. Slavin dis- 

 covered this form which is clearly intermediate between the two species. 

 From V. Lecontiana the hybrid is easily distinguished by the greenish or 

 grayish green, not whitish under side of the leaves, their coarser more 

 prominent serration and their usually smaller size. From V. vulpina 

 it differs chiefly in the partly deeply lobed leaves with rounded sinuses, 

 the shorter much broader teeth and in the more or less pubescent and 

 somewhat grayish green under side of the leaves and the narrower and 

 slenderer fruiting panicle. Some specimens as those collected on August 

 9, 1913, and one of the two collected September 15, approach more closely 

 V. vulpina in their only shallowly lobed leaves slightly pubescent be- 

 neath along the veins, but the influence of V. bicolor is shown by the 

 much broader and shorter teeth and the acute narrow basal sinus of the 



leaves. 



X Vitis Andersonii (V. Coignctiac x vulpina), hybr. nov. 



Young branchlets at first covered with a floccose tomentum soon be- 

 coming glabrous or glabrescent, or nearly glabrous from the first. Leaves 

 broadly triangular-ovate, 10-20 cm. long and about as broad, 3-lobed, 

 with broadly triangular acuminate lobes, coarsely and very unequally 

 toothed with broad triangular acute, or short-acuminate and mucronulate 

 teeth, the sinus deep and broad its sides diverging at an acute or right 

 angle, rarely at an obtuse angle with nearly truncate base, densely floc- 

 cose-tomentosc while young or only slightly cobwebby and pubescent on 



the veins and veinlets beneath, at maturity covered beneath on the veins 

 and veinlets with long-lanuginose hairs or only pilose on the veins and 

 larger veinlets; petioles 3.5-7 cm. long, with a floccose-tomentose pubes- 

 cence while young or pilose particularly toward the apex, sometimes 

 glabrous or nearly so. Flowers not seen. Fruiting panicle rather small, 

 4-7 cm. long, berries globose, 1-1.2 mm. diam., bluish black and bloomy; 

 seeds obovoid (5-7 mm. long, light grayish brown with a narrowly obovate 

 small chalaza in the middle of the seed. 



